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Name | Age (2007) | Estimated Net Worth (2007) | Source of Wealth | Country of Citizenship | |
---|---|---|---|---|---|
1 | William Gates III | 51 | $56 billion | Microsoft/Investments | United States |
2 | Warren Buffett | 76 | $52 billion | Berkshire Hathaway/Investments | United States |
3 | Carlos Slim Helù | 67 | $49 billion | Telecommunications | Mexico |
4 | Ingvar Kamprad | 80 | $33 billion | Ikea/retail | Sweden |
5 | Lakshmi Mittal | 56 | $32 billion | Inherited/steel industury | India |