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Finding the Fourth Proportional to 621,666.44, 932,499.65 and 411,255.17

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Solution

The fourth proportional to 621,666.44, 932,499.65 and 411,255.17 is: 616,882.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,666.44 : 932,499.65 = 411,255.17 : x
  2. Step 2: Convert to fraction form
    621,666.44/932,499.65 = 411,255.17/x
  3. Step 3: Cross multiply
    621,666.44x = 932,499.65 × 411,255.17
  4. Step 4: Simplify right side
    621,666.44x = 383,495,298,451.33
  5. Step 5: Solve for x
    x = 383,495,298,451.33/621,666.44
  6. Step 6: Final answer
    x = 616,882.75

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.