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Finding the Fourth Proportional to 20,679.68, 31,010.20 and 5,885.04

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Solution

The fourth proportional to 20,679.68, 31,010.20 and 5,885.04 is: 8,824.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.68 : 31,010.20 = 5,885.04 : x
  2. Step 2: Convert to fraction form
    20,679.68/31,010.20 = 5,885.04/x
  3. Step 3: Cross multiply
    20,679.68x = 31,010.20 × 5,885.04
  4. Step 4: Simplify right side
    20,679.68x = 182,496,267.41
  5. Step 5: Solve for x
    x = 182,496,267.41/20,679.68
  6. Step 6: Final answer
    x = 8,824.91

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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.