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Finding the Fourth Proportional to 143,912.40, 198,575.24 and 80,248.40

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Solution

The fourth proportional to 143,912.40, 198,575.24 and 80,248.40 is: 110,729.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,912.40 : 198,575.24 = 80,248.40 : x
  2. Step 2: Convert to fraction form
    143,912.40/198,575.24 = 80,248.40/x
  3. Step 3: Cross multiply
    143,912.40x = 198,575.24 × 80,248.40
  4. Step 4: Simplify right side
    143,912.40x = 15,935,345,289.62
  5. Step 5: Solve for x
    x = 15,935,345,289.62/143,912.40
  6. Step 6: Final answer
    x = 110,729.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.