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Finding the Fourth Proportional to 33,672.18, 50,509.80 and 12,606.78

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Solution

The fourth proportional to 33,672.18, 50,509.80 and 12,606.78 is: 18,910.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,672.18 : 50,509.80 = 12,606.78 : x
  2. Step 2: Convert to fraction form
    33,672.18/50,509.80 = 12,606.78/x
  3. Step 3: Cross multiply
    33,672.18x = 50,509.80 × 12,606.78
  4. Step 4: Simplify right side
    33,672.18x = 636,765,936.44
  5. Step 5: Solve for x
    x = 636,765,936.44/33,672.18
  6. Step 6: Final answer
    x = 18,910.74

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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.