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Finding the Fourth Proportional to 144,906.30, 217,359.45 and 118,640.70

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Solution

The fourth proportional to 144,906.30, 217,359.45 and 118,640.70 is: 177,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,906.30 : 217,359.45 = 118,640.70 : x
  2. Step 2: Convert to fraction form
    144,906.30/217,359.45 = 118,640.70/x
  3. Step 3: Cross multiply
    144,906.30x = 217,359.45 × 118,640.70
  4. Step 4: Simplify right side
    144,906.30x = 25,787,677,299.62
  5. Step 5: Solve for x
    x = 25,787,677,299.62/144,906.30
  6. Step 6: Final answer
    x = 177,961.05

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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.