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Finding the Fourth Proportional to 118,458.43, 177,770.67 and 68,469.75

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Solution

The fourth proportional to 118,458.43, 177,770.67 and 68,469.75 is: 102,752.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,458.43 : 177,770.67 = 68,469.75 : x
  2. Step 2: Convert to fraction form
    118,458.43/177,770.67 = 68,469.75/x
  3. Step 3: Cross multiply
    118,458.43x = 177,770.67 × 68,469.75
  4. Step 4: Simplify right side
    118,458.43x = 12,171,913,075.47
  5. Step 5: Solve for x
    x = 12,171,913,075.47/118,458.43
  6. Step 6: Final answer
    x = 102,752.61

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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.