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Finding the Third Proportional to 3,934 and 5,091

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Solution

The third proportional to 3,934 and 5,091 is: 6,588.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934 : 5,091 = 5,091 : x
  2. Step 2: Convert to fraction form
    3,934/5,091 = 5,091/x
  3. Step 3: Cross multiply
    3,934x = 5,091 × 5,091
  4. Step 4: Simplify right side
    3,934x = 25,918,281
  5. Step 5: Solve for x
    x = 25,918,281/3,934
  6. Step 6: Final answer
    x = 6,588.28

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.