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Finding the Fourth Proportional to 18,147.60, 25,037.16 and 11,863.56

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Solution

The fourth proportional to 18,147.60, 25,037.16 and 11,863.56 is: 16,367.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,147.60 : 25,037.16 = 11,863.56 : x
  2. Step 2: Convert to fraction form
    18,147.60/25,037.16 = 11,863.56/x
  3. Step 3: Cross multiply
    18,147.60x = 25,037.16 × 11,863.56
  4. Step 4: Simplify right side
    18,147.60x = 297,029,849.89
  5. Step 5: Solve for x
    x = 297,029,849.89/18,147.60
  6. Step 6: Final answer
    x = 16,367.45

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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.