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8. Wal-Mart Stores
Fortune 500 rank: 1
2007 profit: $12.73 billion

The world's biggest retailer tops the Fortune 500 yet again, for the sixth time in the past seven years.

2007 earnings increased 13% as sales rose 8%. Strong international sales in China, Brazil and Central America helped drive results.

NEXT: AT&T

Last updated April 24 2008: 11:07 AM ET