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Finding the Fourth Proportional to 445,103.56, 667,188.78 and 164,441.80

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Solution

The fourth proportional to 445,103.56, 667,188.78 and 164,441.80 is: 246,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,103.56 : 667,188.78 = 164,441.80 : x
  2. Step 2: Convert to fraction form
    445,103.56/667,188.78 = 164,441.80/x
  3. Step 3: Cross multiply
    445,103.56x = 667,188.78 × 164,441.80
  4. Step 4: Simplify right side
    445,103.56x = 109,713,723,923.00
  5. Step 5: Solve for x
    x = 109,713,723,923.00/445,103.56
  6. Step 6: Final answer
    x = 246,490.33

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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.