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Finding the Third Proportional to 4,839 and 7,662

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Solution

The third proportional to 4,839 and 7,662 is: 12,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,839 : 7,662 = 7,662 : x
  2. Step 2: Convert to fraction form
    4,839/7,662 = 7,662/x
  3. Step 3: Cross multiply
    4,839x = 7,662 × 7,662
  4. Step 4: Simplify right side
    4,839x = 58,706,244
  5. Step 5: Solve for x
    x = 58,706,244/4,839
  6. Step 6: Final answer
    x = 12,131.90

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.