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Finding the Fourth Proportional to 367,021.05, 550,531.58 and 311,033.85

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Solution

The fourth proportional to 367,021.05, 550,531.58 and 311,033.85 is: 466,550.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,021.05 : 550,531.58 = 311,033.85 : x
  2. Step 2: Convert to fraction form
    367,021.05/550,531.58 = 311,033.85/x
  3. Step 3: Cross multiply
    367,021.05x = 550,531.58 × 311,033.85
  4. Step 4: Simplify right side
    367,021.05x = 171,233,955,318.81
  5. Step 5: Solve for x
    x = 171,233,955,318.81/367,021.05
  6. Step 6: Final answer
    x = 466,550.78

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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.