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Finding the Fourth Proportional to 99,793.80, 149,690.70 and 92,248.65

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Solution

The fourth proportional to 99,793.80, 149,690.70 and 92,248.65 is: 138,372.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,793.80 : 149,690.70 = 92,248.65 : x
  2. Step 2: Convert to fraction form
    99,793.80/149,690.70 = 92,248.65/x
  3. Step 3: Cross multiply
    99,793.80x = 149,690.70 × 92,248.65
  4. Step 4: Simplify right side
    99,793.80x = 13,808,764,992.56
  5. Step 5: Solve for x
    x = 13,808,764,992.56/99,793.80
  6. Step 6: Final answer
    x = 138,372.98

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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.