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Finding the Fourth Proportional to 118,190.80, 177,286.20 and 104,827.60

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Solution

The fourth proportional to 118,190.80, 177,286.20 and 104,827.60 is: 157,241.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,190.80 : 177,286.20 = 104,827.60 : x
  2. Step 2: Convert to fraction form
    118,190.80/177,286.20 = 104,827.60/x
  3. Step 3: Cross multiply
    118,190.80x = 177,286.20 × 104,827.60
  4. Step 4: Simplify right side
    118,190.80x = 18,584,486,859.12
  5. Step 5: Solve for x
    x = 18,584,486,859.12/118,190.80
  6. Step 6: Final answer
    x = 157,241.40

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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.