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Finding the Fourth Proportional to 33,699.70, 50,481.89 and 16,781.72

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Solution

The fourth proportional to 33,699.70, 50,481.89 and 16,781.72 is: 25,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,699.70 : 50,481.89 = 16,781.72 : x
  2. Step 2: Convert to fraction form
    33,699.70/50,481.89 = 16,781.72/x
  3. Step 3: Cross multiply
    33,699.70x = 50,481.89 × 16,781.72
  4. Step 4: Simplify right side
    33,699.70x = 847,172,859.14
  5. Step 5: Solve for x
    x = 847,172,859.14/33,699.70
  6. Step 6: Final answer
    x = 25,138.89

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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.