I currently have 4000 apples and 2500 oranges.  I'll be buying some more fruit, and I want to have an equal 50/50 ratio of apples to oranges.
If I'm going to buy exactly 4500 pieces of fruit on top of what I started with, how many apples should I buy and how many oranges should I buy?
Think this through step by step to make sure that you answer the question correctly. Write your response using less than 500 words.
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