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Finding the Third Proportional to 3,691 and 4,791

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Solution

The third proportional to 3,691 and 4,791 is: 6,218.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691 : 4,791 = 4,791 : x
  2. Step 2: Convert to fraction form
    3,691/4,791 = 4,791/x
  3. Step 3: Cross multiply
    3,691x = 4,791 × 4,791
  4. Step 4: Simplify right side
    3,691x = 22,953,681
  5. Step 5: Solve for x
    x = 22,953,681/3,691
  6. Step 6: Final answer
    x = 6,218.82

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.