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Finding the Fourth Proportional to 13,881.70, 20,822.55 and 8,053.30

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Solution

The fourth proportional to 13,881.70, 20,822.55 and 8,053.30 is: 12,079.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.70 : 20,822.55 = 8,053.30 : x
  2. Step 2: Convert to fraction form
    13,881.70/20,822.55 = 8,053.30/x
  3. Step 3: Cross multiply
    13,881.70x = 20,822.55 × 8,053.30
  4. Step 4: Simplify right side
    13,881.70x = 167,690,241.92
  5. Step 5: Solve for x
    x = 167,690,241.92/13,881.70
  6. Step 6: Final answer
    x = 12,079.95

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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.