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688.21 centimeters is equivalent to 270.9 inches.

To provide comparisons to known objects of similar size:
– A standard doorway is approximately 78 inches tall, so 688.21 centimeters is more than 3 times taller than a doorway.
– The average height of a basketball hoop is 120 inches, so 688.21 centimeters is more than twice as tall as a basketball hoop.
– The length of a standard car (sedan) is about 182 inches, so 688.21 centimeters is about 1 and a half times longer than a car.
– The height of an adult giraffe is around 192 inches, so 688.21 centimeters is about 1 and a half times taller than a giraffe.