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Finding the Fourth Proportional to 444,831.89, 667,314.65 and 129,247.79

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Solution

The fourth proportional to 444,831.89, 667,314.65 and 129,247.79 is: 193,891.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,831.89 : 667,314.65 = 129,247.79 : x
  2. Step 2: Convert to fraction form
    444,831.89/667,314.65 = 129,247.79/x
  3. Step 3: Cross multiply
    444,831.89x = 667,314.65 × 129,247.79
  4. Step 4: Simplify right side
    444,831.89x = 86,248,940,733.67
  5. Step 5: Solve for x
    x = 86,248,940,733.67/444,831.89
  6. Step 6: Final answer
    x = 193,891.09

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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.