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Finding the Third Proportional to 86,778 and 190,161

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Solution

The third proportional to 86,778 and 190,161 is: 416,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,778 : 190,161 = 190,161 : x
  2. Step 2: Convert to fraction form
    86,778/190,161 = 190,161/x
  3. Step 3: Cross multiply
    86,778x = 190,161 × 190,161
  4. Step 4: Simplify right side
    86,778x = 36,161,205,921
  5. Step 5: Solve for x
    x = 36,161,205,921/86,778
  6. Step 6: Final answer
    x = 416,709.37

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.