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Finding the Fourth Proportional to 624,391.38, 861,660.09 and 337,911.46

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Solution

The fourth proportional to 624,391.38, 861,660.09 and 337,911.46 is: 466,317.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,391.38 : 861,660.09 = 337,911.46 : x
  2. Step 2: Convert to fraction form
    624,391.38/861,660.09 = 337,911.46/x
  3. Step 3: Cross multiply
    624,391.38x = 861,660.09 × 337,911.46
  4. Step 4: Simplify right side
    624,391.38x = 291,164,819,035.63
  5. Step 5: Solve for x
    x = 291,164,819,035.63/624,391.38
  6. Step 6: Final answer
    x = 466,317.81

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1.5x scale

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.