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Finding the Fourth Proportional to 193,940, 267,640.44 and 126,872

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Solution

The fourth proportional to 193,940, 267,640.44 and 126,872 is: 175,085.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,940 : 267,640.44 = 126,872 : x
  2. Step 2: Convert to fraction form
    193,940/267,640.44 = 126,872/x
  3. Step 3: Cross multiply
    193,940x = 267,640.44 × 126,872
  4. Step 4: Simplify right side
    193,940x = 33,956,077,903.68
  5. Step 5: Solve for x
    x = 33,956,077,903.68/193,940
  6. Step 6: Final answer
    x = 175,085.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.