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Finding the Fourth Proportional to 13,321.17, 18,382.92 and 7,352.79

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Solution

The fourth proportional to 13,321.17, 18,382.92 and 7,352.79 is: 10,146.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.17 : 18,382.92 = 7,352.79 : x
  2. Step 2: Convert to fraction form
    13,321.17/18,382.92 = 7,352.79/x
  3. Step 3: Cross multiply
    13,321.17x = 18,382.92 × 7,352.79
  4. Step 4: Simplify right side
    13,321.17x = 135,165,750.35
  5. Step 5: Solve for x
    x = 135,165,750.35/13,321.17
  6. Step 6: Final answer
    x = 10,146.69

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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.