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Finding the Fourth Proportional to 33,279.34, 49,918.43 and 8,319.54

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Solution

The fourth proportional to 33,279.34, 49,918.43 and 8,319.54 is: 12,479.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,279.34 : 49,918.43 = 8,319.54 : x
  2. Step 2: Convert to fraction form
    33,279.34/49,918.43 = 8,319.54/x
  3. Step 3: Cross multiply
    33,279.34x = 49,918.43 × 8,319.54
  4. Step 4: Simplify right side
    33,279.34x = 415,298,375.12
  5. Step 5: Solve for x
    x = 415,298,375.12/33,279.34
  6. Step 6: Final answer
    x = 12,479.17

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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.