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Finding the Fourth Proportional to 101,616.80, 152,425.20 and 99,672.80

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Solution

The fourth proportional to 101,616.80, 152,425.20 and 99,672.80 is: 149,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,616.80 : 152,425.20 = 99,672.80 : x
  2. Step 2: Convert to fraction form
    101,616.80/152,425.20 = 99,672.80/x
  3. Step 3: Cross multiply
    101,616.80x = 152,425.20 × 99,672.80
  4. Step 4: Simplify right side
    101,616.80x = 15,192,646,474.56
  5. Step 5: Solve for x
    x = 15,192,646,474.56/101,616.80
  6. Step 6: Final answer
    x = 149,509.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.