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Finding the Fourth Proportional to 624,614.23, 861,970.43 and 338,134.31

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Solution

The fourth proportional to 624,614.23, 861,970.43 and 338,134.31 is: 466,626.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,614.23 : 861,970.43 = 338,134.31 : x
  2. Step 2: Convert to fraction form
    624,614.23/861,970.43 = 338,134.31/x
  3. Step 3: Cross multiply
    624,614.23x = 861,970.43 × 338,134.31
  4. Step 4: Simplify right side
    624,614.23x = 291,461,778,320.71
  5. Step 5: Solve for x
    x = 291,461,778,320.71/624,614.23
  6. Step 6: Final answer
    x = 466,626.86

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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.