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Finding the Third Proportional to 986 and 1,932

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Solution

The third proportional to 986 and 1,932 is: 3,785.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    986 : 1,932 = 1,932 : x
  2. Step 2: Convert to fraction form
    986/1,932 = 1,932/x
  3. Step 3: Cross multiply
    986x = 1,932 × 1,932
  4. Step 4: Simplify right side
    986x = 3,732,624
  5. Step 5: Solve for x
    x = 3,732,624/986
  6. Step 6: Final answer
    x = 3,785.62

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Why These Related Problems?

These problems maintain the same ratio (1.96) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.