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Finding the Fourth Proportional to 321,099.64, 481,650.62 and 107,861.48

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Solution

The fourth proportional to 321,099.64, 481,650.62 and 107,861.48 is: 161,792.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,099.64 : 481,650.62 = 107,861.48 : x
  2. Step 2: Convert to fraction form
    321,099.64/481,650.62 = 107,861.48/x
  3. Step 3: Cross multiply
    321,099.64x = 481,650.62 × 107,861.48
  4. Step 4: Simplify right side
    321,099.64x = 51,951,548,716.12
  5. Step 5: Solve for x
    x = 51,951,548,716.12/321,099.64
  6. Step 6: Final answer
    x = 161,792.61

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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.