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Finding the Fourth Proportional to 18,167.20, 27,268.20 and 9,408.40

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Solution

The fourth proportional to 18,167.20, 27,268.20 and 9,408.40 is: 14,121.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,167.20 : 27,268.20 = 9,408.40 : x
  2. Step 2: Convert to fraction form
    18,167.20/27,268.20 = 9,408.40/x
  3. Step 3: Cross multiply
    18,167.20x = 27,268.20 × 9,408.40
  4. Step 4: Simplify right side
    18,167.20x = 256,550,132.88
  5. Step 5: Solve for x
    x = 256,550,132.88/18,167.20
  6. Step 6: Final answer
    x = 14,121.61

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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.