Gold prices fell on Friday and were on track for a third consecutive weekly decline, as a stronger dollar and hawkish signals from the US Federal Reserve weighed on the non-yielding metal. Spot gold was down 0.6% at $4,184.33 per ounce, as of 0211 GMT. The contract was down 0.9% so far this week. US gold futures for August delivery fell 1% to $4,202.10. Markets in mainland China and Hong