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Finding the Fourth Proportional to 40,456.80, 60,685.20 and 15,832.80

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Solution

The fourth proportional to 40,456.80, 60,685.20 and 15,832.80 is: 23,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,456.80 : 60,685.20 = 15,832.80 : x
  2. Step 2: Convert to fraction form
    40,456.80/60,685.20 = 15,832.80/x
  3. Step 3: Cross multiply
    40,456.80x = 60,685.20 × 15,832.80
  4. Step 4: Simplify right side
    40,456.80x = 960,816,634.56
  5. Step 5: Solve for x
    x = 960,816,634.56/40,456.80
  6. Step 6: Final answer
    x = 23,749.20

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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.