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Finding the Fourth Proportional to 568,467.38, 784,487.49 and 313,820.66

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Solution

The fourth proportional to 568,467.38, 784,487.49 and 313,820.66 is: 433,073.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,467.38 : 784,487.49 = 313,820.66 : x
  2. Step 2: Convert to fraction form
    568,467.38/784,487.49 = 313,820.66/x
  3. Step 3: Cross multiply
    568,467.38x = 784,487.49 × 313,820.66
  4. Step 4: Simplify right side
    568,467.38x = 246,188,381,873.54
  5. Step 5: Solve for x
    x = 246,188,381,873.54/568,467.38
  6. Step 6: Final answer
    x = 433,073.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.