Panama is about 4.1 times smaller than Oman.

Oman is approximately 309,500 sq km, while Panama is approximately 75,420 sq km, making Panama 24.37% the size of Oman. Meanwhile, the population of Oman is ~5.5 million people (923,502 fewer people live in Panama).
Tip: This to-scale comparison of Oman vs. Panama uses the Mercator projection, which distorts the size of regions near the poles.
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