By Saqib Iqbal Ahmed NEW YORK (Reuters) -The U.S. dollar rose on Wednesday, on pace to snap a three-session losing streak, as concerns about the outlook for global economic growth and rising inflation knocked sentiment a day after U.S. Federal Reserve Chair Jerome Powell struck a more hawkish tone. Powell on Tuesday pledged that the U.S. central bank would ratchet up interest rates as high as needed, including taking rates above neutral, to curb a surge in inflation that he said threatened the foundation of the economy. The neutral rate is the level at which economic activity is neither simula…