Weak demand in Brazil and China, coupled with a stronger US dollar, forced Colgate-Palmolive Co to lower its full-year earnings forecast and report a 17% drop in third-quarter profit. Colgate's profit has fallen in four of the past six quarters. The stronger dollar will slow the company's full-year profit per share growth to 3-4%, Colgate said. It had previously expected a 4-5% growth. Emerging markets, which generate about 50% of Colgate's net sales, have weakened in the pas...