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Finding the Third Proportional to 3,891 and 4,683

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Solution

The third proportional to 3,891 and 4,683 is: 5,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891 : 4,683 = 4,683 : x
  2. Step 2: Convert to fraction form
    3,891/4,683 = 4,683/x
  3. Step 3: Cross multiply
    3,891x = 4,683 × 4,683
  4. Step 4: Simplify right side
    3,891x = 21,930,489
  5. Step 5: Solve for x
    x = 21,930,489/3,891
  6. Step 6: Final answer
    x = 5,636.21

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.