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Finding the Fourth Proportional to 468,031.20, 699,998.80 and 418,469.60

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Solution

The fourth proportional to 468,031.20, 699,998.80 and 418,469.60 is: 625,873.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,031.20 : 699,998.80 = 418,469.60 : x
  2. Step 2: Convert to fraction form
    468,031.20/699,998.80 = 418,469.60/x
  3. Step 3: Cross multiply
    468,031.20x = 699,998.80 × 418,469.60
  4. Step 4: Simplify right side
    468,031.20x = 292,928,217,836.48
  5. Step 5: Solve for x
    x = 292,928,217,836.48/468,031.20
  6. Step 6: Final answer
    x = 625,873.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.