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Finding the Fourth Proportional to 308,694.87, 462,726.59 and 208,865.61

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Solution

The fourth proportional to 308,694.87, 462,726.59 and 208,865.61 is: 313,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,694.87 : 462,726.59 = 208,865.61 : x
  2. Step 2: Convert to fraction form
    308,694.87/462,726.59 = 208,865.61/x
  3. Step 3: Cross multiply
    308,694.87x = 462,726.59 × 208,865.61
  4. Step 4: Simplify right side
    308,694.87x = 96,647,670,439.24
  5. Step 5: Solve for x
    x = 96,647,670,439.24/308,694.87
  6. Step 6: Final answer
    x = 313,084.80

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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.