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Finding the Third Proportional to 61,156 and 86,121.25

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Solution

The third proportional to 61,156 and 86,121.25 is: 121,277.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,156 : 86,121.25 = 86,121.25 : x
  2. Step 2: Convert to fraction form
    61,156/86,121.25 = 86,121.25/x
  3. Step 3: Cross multiply
    61,156x = 86,121.25 × 86,121.25
  4. Step 4: Simplify right side
    61,156x = 7,416,869,701.56
  5. Step 5: Solve for x
    x = 7,416,869,701.56/61,156
  6. Step 6: Final answer
    x = 121,277.87

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.