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Finding the Fourth Proportional to 99,311.25, 148,919.99 and 36,086.76

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Solution

The fourth proportional to 99,311.25, 148,919.99 and 36,086.76 is: 54,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,311.25 : 148,919.99 = 36,086.76 : x
  2. Step 2: Convert to fraction form
    99,311.25/148,919.99 = 36,086.76/x
  3. Step 3: Cross multiply
    99,311.25x = 148,919.99 × 36,086.76
  4. Step 4: Simplify right side
    99,311.25x = 5,374,039,757.90
  5. Step 5: Solve for x
    x = 5,374,039,757.90/99,311.25
  6. Step 6: Final answer
    x = 54,113.10

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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.