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Finding the Fourth Proportional to 99,862.30, 149,793.45 and 92,259.10

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Solution

The fourth proportional to 99,862.30, 149,793.45 and 92,259.10 is: 138,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,862.30 : 149,793.45 = 92,259.10 : x
  2. Step 2: Convert to fraction form
    99,862.30/149,793.45 = 92,259.10/x
  3. Step 3: Cross multiply
    99,862.30x = 149,793.45 × 92,259.10
  4. Step 4: Simplify right side
    99,862.30x = 13,819,808,882.90
  5. Step 5: Solve for x
    x = 13,819,808,882.90/99,862.30
  6. Step 6: Final answer
    x = 138,388.65

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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.