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Finding the Fourth Proportional to 118,580.10, 177,879.51 and 39,694.65

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Solution

The fourth proportional to 118,580.10, 177,879.51 and 39,694.65 is: 59,545.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,580.10 : 177,879.51 = 39,694.65 : x
  2. Step 2: Convert to fraction form
    118,580.10/177,879.51 = 39,694.65/x
  3. Step 3: Cross multiply
    118,580.10x = 177,879.51 × 39,694.65
  4. Step 4: Simplify right side
    118,580.10x = 7,060,864,891.62
  5. Step 5: Solve for x
    x = 7,060,864,891.62/118,580.10
  6. Step 6: Final answer
    x = 59,545.11

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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.