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Finding the Fourth Proportional to 481,448.80, 664,436.46 and 266,608.72

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Solution

The fourth proportional to 481,448.80, 664,436.46 and 266,608.72 is: 367,940.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,448.80 : 664,436.46 = 266,608.72 : x
  2. Step 2: Convert to fraction form
    481,448.80/664,436.46 = 266,608.72/x
  3. Step 3: Cross multiply
    481,448.80x = 664,436.46 × 266,608.72
  4. Step 4: Simplify right side
    481,448.80x = 177,144,554,121.93
  5. Step 5: Solve for x
    x = 177,144,554,121.93/481,448.80
  6. Step 6: Final answer
    x = 367,940.59

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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.