YEKATERINBURG — Urals fertilizer billionaire Dmitry Rybolovlev is the new owner of Florida's most expensive house after paying U.S. property tycoon Donald Trump $100 million for the waterfront property. Rybolovlev, whose fortune has soared by $10 billion in the last year on an unprecedented boom in demand for fertilizers, said through a spokesman that the purchase was an investment and that he had no plans to swap Moscow life for the Florida coast. Trump more than doubled his money on the sale of Maison de l'Amitie, a 3,000-square-meter mansion on Palm Beach bought for $41.4 million at a bankruptcy auction...