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Finding the Fourth Proportional to 481,871.63, 664,997.42 and 266,991.59

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Solution

The fourth proportional to 481,871.63, 664,997.42 and 266,991.59 is: 368,456.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,871.63 : 664,997.42 = 266,991.59 : x
  2. Step 2: Convert to fraction form
    481,871.63/664,997.42 = 266,991.59/x
  3. Step 3: Cross multiply
    481,871.63x = 664,997.42 × 266,991.59
  4. Step 4: Simplify right side
    481,871.63x = 177,548,715,854.19
  5. Step 5: Solve for x
    x = 177,548,715,854.19/481,871.63
  6. Step 6: Final answer
    x = 368,456.47

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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.