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Finding the Fourth Proportional to 33,789.70, 50,709.80 and 12,750.49

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Solution

The fourth proportional to 33,789.70, 50,709.80 and 12,750.49 is: 19,135.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,789.70 : 50,709.80 = 12,750.49 : x
  2. Step 2: Convert to fraction form
    33,789.70/50,709.80 = 12,750.49/x
  3. Step 3: Cross multiply
    33,789.70x = 50,709.80 × 12,750.49
  4. Step 4: Simplify right side
    33,789.70x = 646,574,797.80
  5. Step 5: Solve for x
    x = 646,574,797.80/33,789.70
  6. Step 6: Final answer
    x = 19,135.26

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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.