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Finding the Fourth Proportional to 624,617.92, 861,965.58 and 338,131.72

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Solution

The fourth proportional to 624,617.92, 861,965.58 and 338,131.72 is: 466,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,617.92 : 861,965.58 = 338,131.72 : x
  2. Step 2: Convert to fraction form
    624,617.92/861,965.58 = 338,131.72/x
  3. Step 3: Cross multiply
    624,617.92x = 861,965.58 × 338,131.72
  4. Step 4: Simplify right side
    624,617.92x = 291,457,904,146.20
  5. Step 5: Solve for x
    x = 291,457,904,146.20/624,617.92
  6. Step 6: Final answer
    x = 466,617.90

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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.