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Finding the Fourth Proportional to 396,624.21, 594,345.51 and 219,181.92

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Solution

The fourth proportional to 396,624.21, 594,345.51 and 219,181.92 is: 328,446.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,624.21 : 594,345.51 = 219,181.92 : x
  2. Step 2: Convert to fraction form
    396,624.21/594,345.51 = 219,181.92/x
  3. Step 3: Cross multiply
    396,624.21x = 594,345.51 × 219,181.92
  4. Step 4: Simplify right side
    396,624.21x = 130,269,790,025.18
  5. Step 5: Solve for x
    x = 130,269,790,025.18/396,624.21
  6. Step 6: Final answer
    x = 328,446.39

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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.