Here is scenario in which LG makes the postseason with 23 additional wins (45 total).

Here are the final standings in the scenario:
            Team	W	L	D	PCT	GB
          Doosan	124	19	1	0.8671	0.0
              KT	119	24	1	0.8322	5.0
             SSG	104	39	1	0.7273	20.0
         Samsung	93	50	1	0.6503	31.0
              LG	45	95	4	0.3214	77.5	See explanation of tie-breakers below.
          Hanwha	45	95	4	0.3214	77.5	See explanation of tie-breakers below.
             KIA	44	96	4	0.3143	78.5
          Kiwoom	44	96	4	0.3143	78.5
           Lotte	44	96	4	0.3143	78.5
              NC	44	96	4	0.3143	78.5

Explanation of Tie-breakers:
Hanwha and LG tie for fifth place and play a post-season game; the winner goes on to the wild-card game.

To construct the scenario, we start with the current standings:
            Team	W	L	D	GL	PCT	GB
              KT	23	11	1	109	0.676	0.0
              LG	22	13	0	109	0.629	1.5
         Samsung	20	14	1	109	0.588	3.0
             SSG	19	15	1	109	0.559	4.0
             KIA	17	18	1	108	0.486	6.5
          Doosan	16	19	1	108	0.457	7.5
              NC	15	19	1	109	0.441	8.0
          Hanwha	15	20	0	109	0.429	8.5
           Lotte	13	20	1	110	0.394	9.5
          Kiwoom	12	23	1	108	0.343	11.5

The next two tables show, respectively, how many of their remaining games each team wins and ties against each of the other teams in the scenario:

					Scenario Additional Wins Against
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Wins
Doosan	-	13	13	11	13	10	13	14	10	11	108
Hanwha	0	-	10	14	0	1	1	4	0	0	30
KIA	0	0	-	11	0	13	3	0	0	0	27
Kiwoom	0	0	2	-	0	7	10	13	0	0	32
KT	0	13	10	11	-	11	12	13	13	13	96
LG	0	9	0	3	0	-	0	11	0	0	23
Lotte	0	13	5	0	0	13	-	0	0	0	31
NC	0	6	10	0	0	0	13	-	0	0	29
Samsung	0	10	14	10	0	14	14	11	-	0	73
SSG	0	11	14	13	0	13	10	11	13	-	85
-----------------------------------------------------------------------------------
Losses	0	75	78	73	13	82	76	77	36	24

					Scenario Additional Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	0	0	0	0	0	0	0	1	0	0
Hanwha	0	-	0	0	0	1	0	3	0	0	4
KIA	0	0	-	0	0	0	4	0	0	0	3
Kiwoom	0	0	0	-	1	3	0	0	0	0	3
KT	0	0	0	0	-	0	0	0	0	0	0
LG	0	1	0	3	0	-	0	0	0	0	4
Lotte	0	0	3	0	0	0	-	0	0	0	3
NC	0	3	0	0	0	0	0	-	0	1	3
Samsung	0	0	0	0	0	0	0	0	-	0	0
SSG	0	0	0	0	0	0	0	0	0	-	0
-----------------------------------------------------------------------------------
Total	0	4	3	3	0	4	3	3	0	0

The next two tables show, respectively, how many total games each team wins and ties against each of the other teams in the scenario:

					Scenario Total Wins Against
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Wins
Doosan	-	14	15	14	14	12	15	15	12	13	124
Hanwha	2	-	12	16	0	3	3	5	1	3	45
KIA	1	4	-	14	1	14	7	2	1	0	44
Kiwoom	2	0	2	-	1	8	12	15	3	1	44
KT	2	16	15	14	-	15	14	15	14	14	119
LG	4	12	2	5	1	-	2	15	1	3	45
Lotte	1	13	5	4	2	14	-	0	2	3	44
NC	1	8	14	1	1	1	16	-	0	2	44
Samsung	3	15	15	13	2	15	14	16	-	0	93
SSG	3	13	16	15	2	13	13	13	16	-	104
-----------------------------------------------------------------------------------
Losses	19	95	96	96	24	95	96	96	50	39

					Scenario Total Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	0	0	0	0	0	0	0	1	0	1
Hanwha	0	-	0	0	0	1	0	3	0	0	4
KIA	0	0	-	0	0	0	4	0	0	0	4
Kiwoom	0	0	0	-	1	3	0	0	0	0	4
KT	0	0	0	0	-	0	0	0	0	0	1
LG	0	1	0	3	0	-	0	0	0	0	4
Lotte	0	0	3	0	0	0	-	0	0	0	4
NC	0	3	0	0	0	0	0	-	0	1	4
Samsung	0	0	0	0	0	0	0	0	-	0	1
SSG	0	0	0	0	0	0	0	0	0	-	1
-----------------------------------------------------------------------------------
Total	1	4	4	4	1	4	4	4	1	1

# LG Twins magic number
# LG's magic number
# Twins magic number
# KBO Playoff Race