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Finding the Fourth Proportional to 444,149.40, 666,936.90 and 411,403.80

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Solution

The fourth proportional to 444,149.40, 666,936.90 and 411,403.80 is: 617,765.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,149.40 : 666,936.90 = 411,403.80 : x
  2. Step 2: Convert to fraction form
    444,149.40/666,936.90 = 411,403.80/x
  3. Step 3: Cross multiply
    444,149.40x = 666,936.90 × 411,403.80
  4. Step 4: Simplify right side
    444,149.40x = 274,380,375,020.22
  5. Step 5: Solve for x
    x = 274,380,375,020.22/444,149.40
  6. Step 6: Final answer
    x = 617,765.95

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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.