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Finding the Fourth Proportional to 33,879, 46,753.02 and 20,631

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Solution

The fourth proportional to 33,879, 46,753.02 and 20,631 is: 28,470.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,879 : 46,753.02 = 20,631 : x
  2. Step 2: Convert to fraction form
    33,879/46,753.02 = 20,631/x
  3. Step 3: Cross multiply
    33,879x = 46,753.02 × 20,631
  4. Step 4: Simplify right side
    33,879x = 964,561,555.62
  5. Step 5: Solve for x
    x = 964,561,555.62/33,879
  6. Step 6: Final answer
    x = 28,470.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.