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Finding the Third Proportional to 37,590 and 81,660

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Solution

The third proportional to 37,590 and 81,660 is: 177,397.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,590 : 81,660 = 81,660 : x
  2. Step 2: Convert to fraction form
    37,590/81,660 = 81,660/x
  3. Step 3: Cross multiply
    37,590x = 81,660 × 81,660
  4. Step 4: Simplify right side
    37,590x = 6,668,355,600
  5. Step 5: Solve for x
    x = 6,668,355,600/37,590
  6. Step 6: Final answer
    x = 177,397.06

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.