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Finding the Third Proportional to 67,920.75 and 88,749

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Solution

The third proportional to 67,920.75 and 88,749 is: 115,964.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,920.75 : 88,749 = 88,749 : x
  2. Step 2: Convert to fraction form
    67,920.75/88,749 = 88,749/x
  3. Step 3: Cross multiply
    67,920.75x = 88,749 × 88,749
  4. Step 4: Simplify right side
    67,920.75x = 7,876,385,001
  5. Step 5: Solve for x
    x = 7,876,385,001/67,920.75
  6. Step 6: Final answer
    x = 115,964.34

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.