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Finding the Fourth Proportional to 135,432.80, 202,954.80 and 99,614.60

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Solution

The fourth proportional to 135,432.80, 202,954.80 and 99,614.60 is: 149,278.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,432.80 : 202,954.80 = 99,614.60 : x
  2. Step 2: Convert to fraction form
    135,432.80/202,954.80 = 99,614.60/x
  3. Step 3: Cross multiply
    135,432.80x = 202,954.80 × 99,614.60
  4. Step 4: Simplify right side
    135,432.80x = 20,217,261,220.08
  5. Step 5: Solve for x
    x = 20,217,261,220.08/135,432.80
  6. Step 6: Final answer
    x = 149,278.91

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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.