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Finding the Third Proportional to 12,393 and 18,591

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Solution

The third proportional to 12,393 and 18,591 is: 27,888.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393 : 18,591 = 18,591 : x
  2. Step 2: Convert to fraction form
    12,393/18,591 = 18,591/x
  3. Step 3: Cross multiply
    12,393x = 18,591 × 18,591
  4. Step 4: Simplify right side
    12,393x = 345,625,281
  5. Step 5: Solve for x
    x = 345,625,281/12,393
  6. Step 6: Final answer
    x = 27,888.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.