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Finding the Fourth Proportional to 624,606.57, 861,956.88 and 338,126.40

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Solution

The fourth proportional to 624,606.57, 861,956.88 and 338,126.40 is: 466,614.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,606.57 : 861,956.88 = 338,126.40 : x
  2. Step 2: Convert to fraction form
    624,606.57/861,956.88 = 338,126.40/x
  3. Step 3: Cross multiply
    624,606.57x = 861,956.88 × 338,126.40
  4. Step 4: Simplify right side
    624,606.57x = 291,450,376,789.63
  5. Step 5: Solve for x
    x = 291,450,376,789.63/624,606.57
  6. Step 6: Final answer
    x = 466,614.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.