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Finding the Third Proportional to 39,786 and 60,660

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Solution

The third proportional to 39,786 and 60,660 is: 92,485.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,786 : 60,660 = 60,660 : x
  2. Step 2: Convert to fraction form
    39,786/60,660 = 60,660/x
  3. Step 3: Cross multiply
    39,786x = 60,660 × 60,660
  4. Step 4: Simplify right side
    39,786x = 3,679,635,600
  5. Step 5: Solve for x
    x = 3,679,635,600/39,786
  6. Step 6: Final answer
    x = 92,485.69

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.