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Finding the Fourth Proportional to 99,246.30, 148,869.45 and 92,247.90

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Solution

The fourth proportional to 99,246.30, 148,869.45 and 92,247.90 is: 138,371.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,246.30 : 148,869.45 = 92,247.90 : x
  2. Step 2: Convert to fraction form
    99,246.30/148,869.45 = 92,247.90/x
  3. Step 3: Cross multiply
    99,246.30x = 148,869.45 × 92,247.90
  4. Step 4: Simplify right side
    99,246.30x = 13,732,894,136.66
  5. Step 5: Solve for x
    x = 13,732,894,136.66/99,246.30
  6. Step 6: Final answer
    x = 138,371.85

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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.