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Finding the Fourth Proportional to 624,613.92, 861,960.06 and 338,127.72

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Solution

The fourth proportional to 624,613.92, 861,960.06 and 338,127.72 is: 466,612.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,613.92 : 861,960.06 = 338,127.72 : x
  2. Step 2: Convert to fraction form
    624,613.92/861,960.06 = 338,127.72/x
  3. Step 3: Cross multiply
    624,613.92x = 861,960.06 × 338,127.72
  4. Step 4: Simplify right side
    624,613.92x = 291,452,589,818.86
  5. Step 5: Solve for x
    x = 291,452,589,818.86/624,613.92
  6. Step 6: Final answer
    x = 466,612.38

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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.