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Finding the Fourth Proportional to 118,250.10, 177,375.15 and 115,917.30

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Solution

The fourth proportional to 118,250.10, 177,375.15 and 115,917.30 is: 173,875.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,250.10 : 177,375.15 = 115,917.30 : x
  2. Step 2: Convert to fraction form
    118,250.10/177,375.15 = 115,917.30/x
  3. Step 3: Cross multiply
    118,250.10x = 177,375.15 × 115,917.30
  4. Step 4: Simplify right side
    118,250.10x = 20,560,848,475.10
  5. Step 5: Solve for x
    x = 20,560,848,475.10/118,250.10
  6. Step 6: Final answer
    x = 173,875.95

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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.