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Finding the Fourth Proportional to 494,855.40, 682,908.39 and 268,500.90

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Solution

The fourth proportional to 494,855.40, 682,908.39 and 268,500.90 is: 370,535.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,855.40 : 682,908.39 = 268,500.90 : x
  2. Step 2: Convert to fraction form
    494,855.40/682,908.39 = 268,500.90/x
  3. Step 3: Cross multiply
    494,855.40x = 682,908.39 × 268,500.90
  4. Step 4: Simplify right side
    494,855.40x = 183,361,517,332.55
  5. Step 5: Solve for x
    x = 183,361,517,332.55/494,855.40
  6. Step 6: Final answer
    x = 370,535.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.