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Finding the Fourth Proportional to 621,546.69, 932,320.05 and 411,135.42

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Solution

The fourth proportional to 621,546.69, 932,320.05 and 411,135.42 is: 616,703.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,546.69 : 932,320.05 = 411,135.42 : x
  2. Step 2: Convert to fraction form
    621,546.69/932,320.05 = 411,135.42/x
  3. Step 3: Cross multiply
    621,546.69x = 932,320.05 × 411,135.42
  4. Step 4: Simplify right side
    621,546.69x = 383,309,795,331.17
  5. Step 5: Solve for x
    x = 383,309,795,331.17/621,546.69
  6. Step 6: Final answer
    x = 616,703.14

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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.