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Finding the Fourth Proportional to 396,711.44, 594,940.79 and 130,410.57

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Solution

The fourth proportional to 396,711.44, 594,940.79 and 130,410.57 is: 195,574.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,711.44 : 594,940.79 = 130,410.57 : x
  2. Step 2: Convert to fraction form
    396,711.44/594,940.79 = 130,410.57/x
  3. Step 3: Cross multiply
    396,711.44x = 594,940.79 × 130,410.57
  4. Step 4: Simplify right side
    396,711.44x = 77,586,567,866.18
  5. Step 5: Solve for x
    x = 77,586,567,866.18/396,711.44
  6. Step 6: Final answer
    x = 195,574.32

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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.