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Finding the Fourth Proportional to 396,301.20, 594,451.80 and 317,569.20

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Solution

The fourth proportional to 396,301.20, 594,451.80 and 317,569.20 is: 476,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,301.20 : 594,451.80 = 317,569.20 : x
  2. Step 2: Convert to fraction form
    396,301.20/594,451.80 = 317,569.20/x
  3. Step 3: Cross multiply
    396,301.20x = 594,451.80 × 317,569.20
  4. Step 4: Simplify right side
    396,301.20x = 188,779,582,564.56
  5. Step 5: Solve for x
    x = 188,779,582,564.56/396,301.20
  6. Step 6: Final answer
    x = 476,353.80

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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.