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Finding the Fourth Proportional to 157,797.78, 236,814.21 and 115,786.41

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Solution

The fourth proportional to 157,797.78, 236,814.21 and 115,786.41 is: 173,765.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,797.78 : 236,814.21 = 115,786.41 : x
  2. Step 2: Convert to fraction form
    157,797.78/236,814.21 = 115,786.41/x
  3. Step 3: Cross multiply
    157,797.78x = 236,814.21 × 115,786.41
  4. Step 4: Simplify right side
    157,797.78x = 27,419,867,212.89
  5. Step 5: Solve for x
    x = 27,419,867,212.89/157,797.78
  6. Step 6: Final answer
    x = 173,765.86

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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.