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Finding the Fourth Proportional to 481,431.87, 664,396.65 and 266,571.77

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Solution

The fourth proportional to 481,431.87, 664,396.65 and 266,571.77 is: 367,880.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,431.87 : 664,396.65 = 266,571.77 : x
  2. Step 2: Convert to fraction form
    481,431.87/664,396.65 = 266,571.77/x
  3. Step 3: Cross multiply
    481,431.87x = 664,396.65 × 266,571.77
  4. Step 4: Simplify right side
    481,431.87x = 177,109,387,650.59
  5. Step 5: Solve for x
    x = 177,109,387,650.59/481,431.87
  6. Step 6: Final answer
    x = 367,880.48

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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.