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Finding the Third Proportional to 41,777.50 and 64,721

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Solution

The third proportional to 41,777.50 and 64,721 is: 100,264.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,777.50 : 64,721 = 64,721 : x
  2. Step 2: Convert to fraction form
    41,777.50/64,721 = 64,721/x
  3. Step 3: Cross multiply
    41,777.50x = 64,721 × 64,721
  4. Step 4: Simplify right side
    41,777.50x = 4,188,807,841
  5. Step 5: Solve for x
    x = 4,188,807,841/41,777.50
  6. Step 6: Final answer
    x = 100,264.68

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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.