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Finding the Fourth Proportional to 481,447.80, 664,435.08 and 266,607.72

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Solution

The fourth proportional to 481,447.80, 664,435.08 and 266,607.72 is: 367,939.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,447.80 : 664,435.08 = 266,607.72 : x
  2. Step 2: Convert to fraction form
    481,447.80/664,435.08 = 266,607.72/x
  3. Step 3: Cross multiply
    481,447.80x = 664,435.08 × 266,607.72
  4. Step 4: Simplify right side
    481,447.80x = 177,143,521,766.82
  5. Step 5: Solve for x
    x = 177,143,521,766.82/481,447.80
  6. Step 6: Final answer
    x = 367,939.21

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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.