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Finding the Fourth Proportional to 13,662.13, 18,854.21 and 7,997.41

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Solution

The fourth proportional to 13,662.13, 18,854.21 and 7,997.41 is: 11,036.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.13 : 18,854.21 = 7,997.41 : x
  2. Step 2: Convert to fraction form
    13,662.13/18,854.21 = 7,997.41/x
  3. Step 3: Cross multiply
    13,662.13x = 18,854.21 × 7,997.41
  4. Step 4: Simplify right side
    13,662.13x = 150,784,775.47
  5. Step 5: Solve for x
    x = 150,784,775.47/13,662.13
  6. Step 6: Final answer
    x = 11,036.69

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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.