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Finding the Third Proportional to 31,000 and 73,660

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Solution

The third proportional to 31,000 and 73,660 is: 175,025.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,000 : 73,660 = 73,660 : x
  2. Step 2: Convert to fraction form
    31,000/73,660 = 73,660/x
  3. Step 3: Cross multiply
    31,000x = 73,660 × 73,660
  4. Step 4: Simplify right side
    31,000x = 5,425,795,600
  5. Step 5: Solve for x
    x = 5,425,795,600/31,000
  6. Step 6: Final answer
    x = 175,025.66

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Why These Related Problems?

These problems maintain the same ratio (2.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.