The 25 richest self-made billionaires

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bill gates

Chip Somodevilla / Getty

Microsoft founder Bill Gates is worth an estimated $85.7 billion.

There are two types of billionaires: those who inherited their wealth, and those who built it from nothing.

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Our friends at Wealth-X, a database of information about ultra-high net worth individuals, focused on the latter to compile a list of the wealthiest self-made billionaires in the world.

From tech mogul Bill Gates to Alibaba founder Jack Ma, here's who made the list.

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