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Finding the Fourth Proportional to 468,425.20, 702,564.90 and 131,432.80

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Solution

The fourth proportional to 468,425.20, 702,564.90 and 131,432.80 is: 197,128.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,425.20 : 702,564.90 = 131,432.80 : x
  2. Step 2: Convert to fraction form
    468,425.20/702,564.90 = 131,432.80/x
  3. Step 3: Cross multiply
    468,425.20x = 702,564.90 × 131,432.80
  4. Step 4: Simplify right side
    468,425.20x = 92,340,071,988.72
  5. Step 5: Solve for x
    x = 92,340,071,988.72/468,425.20
  6. Step 6: Final answer
    x = 197,128.75

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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.