EMERGING MARKETS-Latam currencies weaken on Fed outlook

SAO PAULO, Jan 29 (Reuters) - Latin American currencies weakened against the dollar on Thursday after the U.S. Federal Reserve maintained an optimistic outlook for the world's largest economy and signaled it was on track to raise interest rates in 2015. Equity markets were broadly lower, with the MSCI Latin American stock index slipping for the fourth session in five. The Fed on Wednesday said the U.S. economy was expanding "at a solid pace" with strong job gains, fueling expectations t