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Finding the Third Proportional to 84,978 and 167,770

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Solution

The third proportional to 84,978 and 167,770 is: 331,224.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,978 : 167,770 = 167,770 : x
  2. Step 2: Convert to fraction form
    84,978/167,770 = 167,770/x
  3. Step 3: Cross multiply
    84,978x = 167,770 × 167,770
  4. Step 4: Simplify right side
    84,978x = 28,146,772,900
  5. Step 5: Solve for x
    x = 28,146,772,900/84,978
  6. Step 6: Final answer
    x = 331,224.23

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.