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Finding the Third Proportional to 4,962 and 7,689

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Solution

The third proportional to 4,962 and 7,689 is: 11,914.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,962 : 7,689 = 7,689 : x
  2. Step 2: Convert to fraction form
    4,962/7,689 = 7,689/x
  3. Step 3: Cross multiply
    4,962x = 7,689 × 7,689
  4. Step 4: Simplify right side
    4,962x = 59,120,721
  5. Step 5: Solve for x
    x = 59,120,721/4,962
  6. Step 6: Final answer
    x = 11,914.70

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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.