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Finding the Third Proportional to 81,794 and 115,991

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Solution

The third proportional to 81,794 and 115,991 is: 164,485.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,794 : 115,991 = 115,991 : x
  2. Step 2: Convert to fraction form
    81,794/115,991 = 115,991/x
  3. Step 3: Cross multiply
    81,794x = 115,991 × 115,991
  4. Step 4: Simplify right side
    81,794x = 13,453,912,081
  5. Step 5: Solve for x
    x = 13,453,912,081/81,794
  6. Step 6: Final answer
    x = 164,485.32

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.