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Finding the Third Proportional to 75,721.50 and 117,234

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Solution

The third proportional to 75,721.50 and 117,234 is: 181,504.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,721.50 : 117,234 = 117,234 : x
  2. Step 2: Convert to fraction form
    75,721.50/117,234 = 117,234/x
  3. Step 3: Cross multiply
    75,721.50x = 117,234 × 117,234
  4. Step 4: Simplify right side
    75,721.50x = 13,743,810,756
  5. Step 5: Solve for x
    x = 13,743,810,756/75,721.50
  6. Step 6: Final answer
    x = 181,504.73

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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.