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Finding the Fourth Proportional to 79,131.64, 118,615.44 and 49,481.41

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Solution

The fourth proportional to 79,131.64, 118,615.44 and 49,481.41 is: 74,170.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,131.64 : 118,615.44 = 49,481.41 : x
  2. Step 2: Convert to fraction form
    79,131.64/118,615.44 = 49,481.41/x
  3. Step 3: Cross multiply
    79,131.64x = 118,615.44 × 49,481.41
  4. Step 4: Simplify right side
    79,131.64x = 5,869,259,218.97
  5. Step 5: Solve for x
    x = 5,869,259,218.97/79,131.64
  6. Step 6: Final answer
    x = 74,170.83

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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.