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For the 12th year in a row, Mukesh Ambani, the head of oil-gas-telecom conglomerate Reliance Industries, topped the list with an estimated net worth of $51.4 billion.
Despite a slowdown of economic growth that caused more than half of India's 100 richest people to lose money, Ambani has only gotten richer, adding $4.1 billion to his fortune in the past year.