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Finding the Fourth Proportional to 13,772.17, 20,650.04 and 5,453.38

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Solution

The fourth proportional to 13,772.17, 20,650.04 and 5,453.38 is: 8,176.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.17 : 20,650.04 = 5,453.38 : x
  2. Step 2: Convert to fraction form
    13,772.17/20,650.04 = 5,453.38/x
  3. Step 3: Cross multiply
    13,772.17x = 20,650.04 × 5,453.38
  4. Step 4: Simplify right side
    13,772.17x = 112,612,384.62
  5. Step 5: Solve for x
    x = 112,612,384.62/13,772.17
  6. Step 6: Final answer
    x = 8,176.81

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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.