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Finding the Fourth Proportional to 591,467.20, 886,876.80 and 291,287.68

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Solution

The fourth proportional to 591,467.20, 886,876.80 and 291,287.68 is: 436,771.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,467.20 : 886,876.80 = 291,287.68 : x
  2. Step 2: Convert to fraction form
    591,467.20/886,876.80 = 291,287.68/x
  3. Step 3: Cross multiply
    591,467.20x = 886,876.80 × 291,287.68
  4. Step 4: Simplify right side
    591,467.20x = 258,336,285,517.82
  5. Step 5: Solve for x
    x = 258,336,285,517.82/591,467.20
  6. Step 6: Final answer
    x = 436,771.96

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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.