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Finding the Fourth Proportional to 13,400.87, 18,493.31 and 7,432.48

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Solution

The fourth proportional to 13,400.87, 18,493.31 and 7,432.48 is: 10,256.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.87 : 18,493.31 = 7,432.48 : x
  2. Step 2: Convert to fraction form
    13,400.87/18,493.31 = 7,432.48/x
  3. Step 3: Cross multiply
    13,400.87x = 18,493.31 × 7,432.48
  4. Step 4: Simplify right side
    13,400.87x = 137,451,156.71
  5. Step 5: Solve for x
    x = 137,451,156.71/13,400.87
  6. Step 6: Final answer
    x = 10,256.88

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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.