Moscow is about 2.8 times bigger than Fort Worth.

Fort Worth (map shows its 16 named neighbourhoods; the area covers the whole city) is approximately 911 sq km, while Moscow (map shows its 125 districts within the pre-2012 boundary; the area includes New Moscow) is approximately 2,562 sq km, making Moscow 181% larger than Fort Worth.
Tip: This to-scale comparison of Fort Worth vs. Moscow uses the Mercator projection, which distorts the size of regions near the poles.
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