NEW YORK—Gold prices rose modestly Tuesday as a falling dollar and expectations of an aggressive U.S. interest rate cut fed buying of hard assets as a hedge against inflation.

Other commodities mostly rose, with crude oil, copper and agriculture futures all trading higher.

The Federal Reserve is widely expected to continue its rate-cutting campaign Tuesday in its bid to free up locked credit markets and kick-start the limping U.S. economy. Analysts predict the Fed will cut the benchmark federal funds rate between 0.5 percentage point and a full point. Lower interest rat...

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