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Finding the Third Proportional to 72,831 and 98,400

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Solution

The third proportional to 72,831 and 98,400 is: 132,945.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,831 : 98,400 = 98,400 : x
  2. Step 2: Convert to fraction form
    72,831/98,400 = 98,400/x
  3. Step 3: Cross multiply
    72,831x = 98,400 × 98,400
  4. Step 4: Simplify right side
    72,831x = 9,682,560,000
  5. Step 5: Solve for x
    x = 9,682,560,000/72,831
  6. Step 6: Final answer
    x = 132,945.59

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.