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Finding the Fourth Proportional to 13,297.92, 18,331.52 and 8,517.30

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Solution

The fourth proportional to 13,297.92, 18,331.52 and 8,517.30 is: 11,741.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.92 : 18,331.52 = 8,517.30 : x
  2. Step 2: Convert to fraction form
    13,297.92/18,331.52 = 8,517.30/x
  3. Step 3: Cross multiply
    13,297.92x = 18,331.52 × 8,517.30
  4. Step 4: Simplify right side
    13,297.92x = 156,135,012.71
  5. Step 5: Solve for x
    x = 156,135,012.71/13,297.92
  6. Step 6: Final answer
    x = 11,741.31

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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.