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451.6 cubic centimeters is about one-and-two-fifths times as as a Baseball (packed).
In other words, it's 1.3738544 times the of a Baseball (packed), and the of a Baseball (packed) is 0.72787917 times that amount.
(64% packing density) (MLB rules)
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Click here to see how other things compare to 451.6 cubic centimeters...