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Finding the Fourth Proportional to 92,324.70, 138,195.45 and 72,495.90

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Solution

The fourth proportional to 92,324.70, 138,195.45 and 72,495.90 is: 108,514.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,324.70 : 138,195.45 = 72,495.90 : x
  2. Step 2: Convert to fraction form
    92,324.70/138,195.45 = 72,495.90/x
  3. Step 3: Cross multiply
    92,324.70x = 138,195.45 × 72,495.90
  4. Step 4: Simplify right side
    92,324.70x = 10,018,603,523.66
  5. Step 5: Solve for x
    x = 10,018,603,523.66/92,324.70
  6. Step 6: Final answer
    x = 108,514.88

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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.