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Finding the Fourth Proportional to 624,618.92, 861,966.96 and 338,132.72

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Solution

The fourth proportional to 624,618.92, 861,966.96 and 338,132.72 is: 466,619.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,618.92 : 861,966.96 = 338,132.72 : x
  2. Step 2: Convert to fraction form
    624,618.92/861,966.96 = 338,132.72/x
  3. Step 3: Cross multiply
    624,618.92x = 861,966.96 × 338,132.72
  4. Step 4: Simplify right side
    624,618.92x = 291,459,232,734.93
  5. Step 5: Solve for x
    x = 291,459,232,734.93/624,618.92
  6. Step 6: Final answer
    x = 466,619.28

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Double scale
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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.