Growth in China’s investment and factory output missed forecasts in August, pointing to a further cooling in the world’s second-largest economy that will likely prompt the government to roll out more support measures. The downbeat data came on the heels of weak trade and inflation readings, raising the chances that third-quarter economic growth may dip below 7 percent for the first time since the global crisis. Fears of a China-led global economic slowdown have roiled global markets in recent weeks, prompting speculation that the U.S.