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Finding the Third Proportional to 80,665.50 and 125,311.50

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Solution

The third proportional to 80,665.50 and 125,311.50 is: 194,667.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,665.50 : 125,311.50 = 125,311.50 : x
  2. Step 2: Convert to fraction form
    80,665.50/125,311.50 = 125,311.50/x
  3. Step 3: Cross multiply
    80,665.50x = 125,311.50 × 125,311.50
  4. Step 4: Simplify right side
    80,665.50x = 15,702,972,032.25
  5. Step 5: Solve for x
    x = 15,702,972,032.25/80,665.50
  6. Step 6: Final answer
    x = 194,667.76

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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.