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Finding the Fourth Proportional to 13,672.45, 20,502.60 and 5,349.70

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Solution

The fourth proportional to 13,672.45, 20,502.60 and 5,349.70 is: 8,022.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.45 : 20,502.60 = 5,349.70 : x
  2. Step 2: Convert to fraction form
    13,672.45/20,502.60 = 5,349.70/x
  3. Step 3: Cross multiply
    13,672.45x = 20,502.60 × 5,349.70
  4. Step 4: Simplify right side
    13,672.45x = 109,682,759.22
  5. Step 5: Solve for x
    x = 109,682,759.22/13,672.45
  6. Step 6: Final answer
    x = 8,022.17

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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.