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Finding the Fourth Proportional to 118,838.58, 178,249.11 and 43,923.78

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Solution

The fourth proportional to 118,838.58, 178,249.11 and 43,923.78 is: 65,882.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,838.58 : 178,249.11 = 43,923.78 : x
  2. Step 2: Convert to fraction form
    118,838.58/178,249.11 = 43,923.78/x
  3. Step 3: Cross multiply
    118,838.58x = 178,249.11 × 43,923.78
  4. Step 4: Simplify right side
    118,838.58x = 7,829,374,692.84
  5. Step 5: Solve for x
    x = 7,829,374,692.84/118,838.58
  6. Step 6: Final answer
    x = 65,882.43

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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.