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Finding the Fourth Proportional to 13,327.31, 18,391.69 and 7,358.99

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Solution

The fourth proportional to 13,327.31, 18,391.69 and 7,358.99 is: 10,155.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327.31 : 18,391.69 = 7,358.99 : x
  2. Step 2: Convert to fraction form
    13,327.31/18,391.69 = 7,358.99/x
  3. Step 3: Cross multiply
    13,327.31x = 18,391.69 × 7,358.99
  4. Step 4: Simplify right side
    13,327.31x = 135,344,244.40
  5. Step 5: Solve for x
    x = 135,344,244.40/13,327.31
  6. Step 6: Final answer
    x = 10,155.41

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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.