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Finding the Third Proportional to 74,922 and 160,860

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Solution

The third proportional to 74,922 and 160,860 is: 345,371.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,922 : 160,860 = 160,860 : x
  2. Step 2: Convert to fraction form
    74,922/160,860 = 160,860/x
  3. Step 3: Cross multiply
    74,922x = 160,860 × 160,860
  4. Step 4: Simplify right side
    74,922x = 25,875,939,600
  5. Step 5: Solve for x
    x = 25,875,939,600/74,922
  6. Step 6: Final answer
    x = 345,371.71

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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.