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Finding the Third Proportional to 127,857.75 and 191,786.75

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Solution

The third proportional to 127,857.75 and 191,786.75 is: 287,680.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,857.75 : 191,786.75 = 191,786.75 : x
  2. Step 2: Convert to fraction form
    127,857.75/191,786.75 = 191,786.75/x
  3. Step 3: Cross multiply
    127,857.75x = 191,786.75 × 191,786.75
  4. Step 4: Simplify right side
    127,857.75x = 36,782,157,475.56
  5. Step 5: Solve for x
    x = 36,782,157,475.56/127,857.75
  6. Step 6: Final answer
    x = 287,680.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.