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Finding the Third Proportional to 826 and 1,327

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Solution

The third proportional to 826 and 1,327 is: 2,131.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    826 : 1,327 = 1,327 : x
  2. Step 2: Convert to fraction form
    826/1,327 = 1,327/x
  3. Step 3: Cross multiply
    826x = 1,327 × 1,327
  4. Step 4: Simplify right side
    826x = 1,760,929
  5. Step 5: Solve for x
    x = 1,760,929/826
  6. Step 6: Final answer
    x = 2,131.88

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.