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Finding the Third Proportional to 2,447 and 3,918

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Solution

The third proportional to 2,447 and 3,918 is: 6,273.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447 : 3,918 = 3,918 : x
  2. Step 2: Convert to fraction form
    2,447/3,918 = 3,918/x
  3. Step 3: Cross multiply
    2,447x = 3,918 × 3,918
  4. Step 4: Simplify right side
    2,447x = 15,350,724
  5. Step 5: Solve for x
    x = 15,350,724/2,447
  6. Step 6: Final answer
    x = 6,273.28

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.