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Finding the Third Proportional to 74,940 and 160,884

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Solution

The third proportional to 74,940 and 160,884 is: 345,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,940 : 160,884 = 160,884 : x
  2. Step 2: Convert to fraction form
    74,940/160,884 = 160,884/x
  3. Step 3: Cross multiply
    74,940x = 160,884 × 160,884
  4. Step 4: Simplify right side
    74,940x = 25,883,661,456
  5. Step 5: Solve for x
    x = 25,883,661,456/74,940
  6. Step 6: Final answer
    x = 345,391.80

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.