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Steve Ballmer joined Microsoft in 1980 as employee No. 30 after dropping out of Stanford's MBA program. In 2014, he stepped out of the board room and onto the court, purchasing the L.A. Clippers for $2 billion; Forbes now values the team at $7.5 billion.Ballmer has a net worth of $126 billion, landing him on the #ForbesBillionaires list.Here's who else made the rankings: https://t.co/JYn52gRk2zPhoto: Steph Chambers via Getty Images ...