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Finding the Fourth Proportional to 13,635.18, 20,443.23 and 5,308.20

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Solution

The fourth proportional to 13,635.18, 20,443.23 and 5,308.20 is: 7,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.18 : 20,443.23 = 5,308.20 : x
  2. Step 2: Convert to fraction form
    13,635.18/20,443.23 = 5,308.20/x
  3. Step 3: Cross multiply
    13,635.18x = 20,443.23 × 5,308.20
  4. Step 4: Simplify right side
    13,635.18x = 108,516,753.49
  5. Step 5: Solve for x
    x = 108,516,753.49/13,635.18
  6. Step 6: Final answer
    x = 7,958.59

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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.