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Finding the Fourth Proportional to 396,699.30, 594,064.80 and 317,967.30

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Solution

The fourth proportional to 396,699.30, 594,064.80 and 317,967.30 is: 476,162.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,699.30 : 594,064.80 = 317,967.30 : x
  2. Step 2: Convert to fraction form
    396,699.30/594,064.80 = 317,967.30/x
  3. Step 3: Cross multiply
    396,699.30x = 594,064.80 × 317,967.30
  4. Step 4: Simplify right side
    396,699.30x = 188,893,180,481.04
  5. Step 5: Solve for x
    x = 188,893,180,481.04/396,699.30
  6. Step 6: Final answer
    x = 476,162.12

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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.