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Finding the Fourth Proportional to 22,116.28, 30,520.14 and 13,163.68

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Solution

The fourth proportional to 22,116.28, 30,520.14 and 13,163.68 is: 18,165.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,116.28 : 30,520.14 = 13,163.68 : x
  2. Step 2: Convert to fraction form
    22,116.28/30,520.14 = 13,163.68/x
  3. Step 3: Cross multiply
    22,116.28x = 30,520.14 × 13,163.68
  4. Step 4: Simplify right side
    22,116.28x = 401,757,356.52
  5. Step 5: Solve for x
    x = 401,757,356.52/22,116.28
  6. Step 6: Final answer
    x = 18,165.68

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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.