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Finding the Third Proportional to 71,918 and 112,571

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Solution

The third proportional to 71,918 and 112,571 is: 176,203.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,918 : 112,571 = 112,571 : x
  2. Step 2: Convert to fraction form
    71,918/112,571 = 112,571/x
  3. Step 3: Cross multiply
    71,918x = 112,571 × 112,571
  4. Step 4: Simplify right side
    71,918x = 12,672,230,041
  5. Step 5: Solve for x
    x = 12,672,230,041/71,918
  6. Step 6: Final answer
    x = 176,203.87

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.