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Finding the Fourth Proportional to 96,609.20, 144,913.80 and 92,721.20

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Solution

The fourth proportional to 96,609.20, 144,913.80 and 92,721.20 is: 139,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,609.20 : 144,913.80 = 92,721.20 : x
  2. Step 2: Convert to fraction form
    96,609.20/144,913.80 = 92,721.20/x
  3. Step 3: Cross multiply
    96,609.20x = 144,913.80 × 92,721.20
  4. Step 4: Simplify right side
    96,609.20x = 13,436,581,432.56
  5. Step 5: Solve for x
    x = 13,436,581,432.56/96,609.20
  6. Step 6: Final answer
    x = 139,081.80

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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.