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Finding the Third Proportional to 8,612 and 13,182

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Solution

The third proportional to 8,612 and 13,182 is: 20,177.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612 : 13,182 = 13,182 : x
  2. Step 2: Convert to fraction form
    8,612/13,182 = 13,182/x
  3. Step 3: Cross multiply
    8,612x = 13,182 × 13,182
  4. Step 4: Simplify right side
    8,612x = 173,765,124
  5. Step 5: Solve for x
    x = 173,765,124/8,612
  6. Step 6: Final answer
    x = 20,177.09

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.