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Finding the Fourth Proportional to 481,982.90, 665,136.48 and 267,136.86

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Solution

The fourth proportional to 481,982.90, 665,136.48 and 267,136.86 is: 368,648.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,982.90 : 665,136.48 = 267,136.86 : x
  2. Step 2: Convert to fraction form
    481,982.90/665,136.48 = 267,136.86/x
  3. Step 3: Cross multiply
    481,982.90x = 665,136.48 × 267,136.86
  4. Step 4: Simplify right side
    481,982.90x = 177,682,470,738.65
  5. Step 5: Solve for x
    x = 177,682,470,738.65/481,982.90
  6. Step 6: Final answer
    x = 368,648.91

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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.