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Finding the Fourth Proportional to 77,836.74, 107,408.61 and 43,843.74

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Solution

The fourth proportional to 77,836.74, 107,408.61 and 43,843.74 is: 60,500.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,836.74 : 107,408.61 = 43,843.74 : x
  2. Step 2: Convert to fraction form
    77,836.74/107,408.61 = 43,843.74/x
  3. Step 3: Cross multiply
    77,836.74x = 107,408.61 × 43,843.74
  4. Step 4: Simplify right side
    77,836.74x = 4,709,195,170.60
  5. Step 5: Solve for x
    x = 4,709,195,170.60/77,836.74
  6. Step 6: Final answer
    x = 60,500.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.