Fort Worth is about 1.3 times smaller than Los Angeles.

Los Angeles (including the city proper only) is approximately 1,215 sq km, while Fort Worth (map shows its 16 named neighbourhoods; the area covers the whole city) is approximately 911 sq km, making Fort Worth 75.04% the size of Los Angeles.
Tip: This to-scale comparison of Los Angeles vs. Fort Worth uses the Mercator projection, which distorts the size of regions near the poles.
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