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Finding the Third Proportional to 79,690 and 167,540

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Solution

The third proportional to 79,690 and 167,540 is: 352,235.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,690 : 167,540 = 167,540 : x
  2. Step 2: Convert to fraction form
    79,690/167,540 = 167,540/x
  3. Step 3: Cross multiply
    79,690x = 167,540 × 167,540
  4. Step 4: Simplify right side
    79,690x = 28,069,651,600
  5. Step 5: Solve for x
    x = 28,069,651,600/79,690
  6. Step 6: Final answer
    x = 352,235.56

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.