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Finding the Fourth Proportional to 621,685.56, 932,528.34 and 411,274.29

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Solution

The fourth proportional to 621,685.56, 932,528.34 and 411,274.29 is: 616,911.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,685.56 : 932,528.34 = 411,274.29 : x
  2. Step 2: Convert to fraction form
    621,685.56/932,528.34 = 411,274.29/x
  3. Step 3: Cross multiply
    621,685.56x = 932,528.34 × 411,274.29
  4. Step 4: Simplify right side
    621,685.56x = 383,524,930,938.38
  5. Step 5: Solve for x
    x = 383,524,930,938.38/621,685.56
  6. Step 6: Final answer
    x = 616,911.44

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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.