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Finding the Fourth Proportional to 574,414.50, 861,620.39 and 153,690.38

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Solution

The fourth proportional to 574,414.50, 861,620.39 and 153,690.38 is: 230,535.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,414.50 : 861,620.39 = 153,690.38 : x
  2. Step 2: Convert to fraction form
    574,414.50/861,620.39 = 153,690.38/x
  3. Step 3: Cross multiply
    574,414.50x = 861,620.39 × 153,690.38
  4. Step 4: Simplify right side
    574,414.50x = 132,422,763,885.71
  5. Step 5: Solve for x
    x = 132,422,763,885.71/574,414.50
  6. Step 6: Final answer
    x = 230,535.20

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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.