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Finding the Third Proportional to 4,962 and 7,679

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Solution

The third proportional to 4,962 and 7,679 is: 11,883.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,962 : 7,679 = 7,679 : x
  2. Step 2: Convert to fraction form
    4,962/7,679 = 7,679/x
  3. Step 3: Cross multiply
    4,962x = 7,679 × 7,679
  4. Step 4: Simplify right side
    4,962x = 58,967,041
  5. Step 5: Solve for x
    x = 58,967,041/4,962
  6. Step 6: Final answer
    x = 11,883.72

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.