To find how much farther Neptune is from Earth than Mars, we have to subtract the distance from Earth to Mars from the distance from Earth to Neptune.
Distance from Earth to Mars: 2.25×10^8 km
Distance from Earth to Neptune: 4.3514×10^9 km
Neptune is 4.3514×10^9 - 2.25×10^8 = 4289919950 km farther from Earth than Mars.
In scientific notation, this is 4.28991995×10^9 km.
The average distance from Earth to Mars is 2.25×10^8 km, and the distance from Earth to Neptune is 4.3514×10^9 km. How much farther is Neptune from Earth than Mars? Express your answer in scientific notation. Do not round your answer.
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