Procter & Gamble said currency rate changes in Venezuela, Argentina and other developing countries are hurting its profitability and therefore has cut its earnings outlook for the year. It expects that earnings will grow 3 to 5%, excluding one-time items, rather than its prior forecast of 5 to 7%. It still expects revenue to rise 3 to 4% when stripping out the effect of acquisitions and foreign exchange rates. P&G, like other consumer products makers, has turned to emerging markets to...