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Finding the Fourth Proportional to 379,098.81, 568,458.07 and 126,290.42

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Solution

The fourth proportional to 379,098.81, 568,458.07 and 126,290.42 is: 189,372.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,098.81 : 568,458.07 = 126,290.42 : x
  2. Step 2: Convert to fraction form
    379,098.81/568,458.07 = 126,290.42/x
  3. Step 3: Cross multiply
    379,098.81x = 568,458.07 × 126,290.42
  4. Step 4: Simplify right side
    379,098.81x = 71,790,808,412.69
  5. Step 5: Solve for x
    x = 71,790,808,412.69/379,098.81
  6. Step 6: Final answer
    x = 189,372.29

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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.