NEW YORK, Sept 21: George Soros, the 83-year-old billionaire investor, philanthropist and active supporter of liberal political causes, is set to marry health care and education consultant Tamiko Bolton today at his estate near New York City. Three days of festivities will begin Friday with a dinner followed by a reception at the Museum of ModernArt in Manhattan for a preview of the new exhibition, “Magritte: The Mystery of the Ordinary, 1926-1938” of works by Belgian painter Rene Magritte.(agencies)