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Finding the Third Proportional to 13,016 and 20,188

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Solution

The third proportional to 13,016 and 20,188 is: 31,311.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,016 : 20,188 = 20,188 : x
  2. Step 2: Convert to fraction form
    13,016/20,188 = 20,188/x
  3. Step 3: Cross multiply
    13,016x = 20,188 × 20,188
  4. Step 4: Simplify right side
    13,016x = 407,555,344
  5. Step 5: Solve for x
    x = 407,555,344/13,016
  6. Step 6: Final answer
    x = 31,311.87

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.