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Finding the Fourth Proportional to 92,620.31, 138,930.45 and 22,499.15

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Solution

The fourth proportional to 92,620.31, 138,930.45 and 22,499.15 is: 33,748.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,620.31 : 138,930.45 = 22,499.15 : x
  2. Step 2: Convert to fraction form
    92,620.31/138,930.45 = 22,499.15/x
  3. Step 3: Cross multiply
    92,620.31x = 138,930.45 × 22,499.15
  4. Step 4: Simplify right side
    92,620.31x = 3,125,817,034.12
  5. Step 5: Solve for x
    x = 3,125,817,034.12/92,620.31
  6. Step 6: Final answer
    x = 33,748.72

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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.