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Finding the Fourth Proportional to 33,836.80, 50,755.20 and 9,212.80

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Solution

The fourth proportional to 33,836.80, 50,755.20 and 9,212.80 is: 13,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,836.80 : 50,755.20 = 9,212.80 : x
  2. Step 2: Convert to fraction form
    33,836.80/50,755.20 = 9,212.80/x
  3. Step 3: Cross multiply
    33,836.80x = 50,755.20 × 9,212.80
  4. Step 4: Simplify right side
    33,836.80x = 467,597,506.56
  5. Step 5: Solve for x
    x = 467,597,506.56/33,836.80
  6. Step 6: Final answer
    x = 13,819.20

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1.5x scale

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.