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Finding the Fourth Proportional to 347,123.28, 479,074.49 and 194,169.97

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Solution

The fourth proportional to 347,123.28, 479,074.49 and 194,169.97 is: 267,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,123.28 : 479,074.49 = 194,169.97 : x
  2. Step 2: Convert to fraction form
    347,123.28/479,074.49 = 194,169.97/x
  3. Step 3: Cross multiply
    347,123.28x = 479,074.49 × 194,169.97
  4. Step 4: Simplify right side
    347,123.28x = 93,021,879,351.07
  5. Step 5: Solve for x
    x = 93,021,879,351.07/347,123.28
  6. Step 6: Final answer
    x = 267,979.37

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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.