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Finding the Fourth Proportional to 118,078.80, 177,118.20 and 94,750.80

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Solution

The fourth proportional to 118,078.80, 177,118.20 and 94,750.80 is: 142,126.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,078.80 : 177,118.20 = 94,750.80 : x
  2. Step 2: Convert to fraction form
    118,078.80/177,118.20 = 94,750.80/x
  3. Step 3: Cross multiply
    118,078.80x = 177,118.20 × 94,750.80
  4. Step 4: Simplify right side
    118,078.80x = 16,782,091,144.56
  5. Step 5: Solve for x
    x = 16,782,091,144.56/118,078.80
  6. Step 6: Final answer
    x = 142,126.20

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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.