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Finding the Third Proportional to 85,986 and 132,868

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Solution

The third proportional to 85,986 and 132,868 is: 205,311.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,986 : 132,868 = 132,868 : x
  2. Step 2: Convert to fraction form
    85,986/132,868 = 132,868/x
  3. Step 3: Cross multiply
    85,986x = 132,868 × 132,868
  4. Step 4: Simplify right side
    85,986x = 17,653,905,424
  5. Step 5: Solve for x
    x = 17,653,905,424/85,986
  6. Step 6: Final answer
    x = 205,311.39

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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.