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Finding the Third Proportional to 986 and 2,579

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Solution

The third proportional to 986 and 2,579 is: 6,745.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    986 : 2,579 = 2,579 : x
  2. Step 2: Convert to fraction form
    986/2,579 = 2,579/x
  3. Step 3: Cross multiply
    986x = 2,579 × 2,579
  4. Step 4: Simplify right side
    986x = 6,651,241
  5. Step 5: Solve for x
    x = 6,651,241/986
  6. Step 6: Final answer
    x = 6,745.68

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Why These Related Problems?

These problems maintain the same ratio (2.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.