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Finding the Fourth Proportional to 13,299.92, 18,353.88 and 7,331.69

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Solution

The fourth proportional to 13,299.92, 18,353.88 and 7,331.69 is: 10,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.92 : 18,353.88 = 7,331.69 : x
  2. Step 2: Convert to fraction form
    13,299.92/18,353.88 = 7,331.69/x
  3. Step 3: Cross multiply
    13,299.92x = 18,353.88 × 7,331.69
  4. Step 4: Simplify right side
    13,299.92x = 134,564,866.69
  5. Step 5: Solve for x
    x = 134,564,866.69/13,299.92
  6. Step 6: Final answer
    x = 10,117.72

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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.