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Finding the Fourth Proportional to 263,161.53, 394,767.32 and 73,621.89

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Solution

The fourth proportional to 263,161.53, 394,767.32 and 73,621.89 is: 110,439.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,161.53 : 394,767.32 = 73,621.89 : x
  2. Step 2: Convert to fraction form
    263,161.53/394,767.32 = 73,621.89/x
  3. Step 3: Cross multiply
    263,161.53x = 394,767.32 × 73,621.89
  4. Step 4: Simplify right side
    263,161.53x = 29,063,515,840.53
  5. Step 5: Solve for x
    x = 29,063,515,840.53/263,161.53
  6. Step 6: Final answer
    x = 110,439.83

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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.