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Finding the Fourth Proportional to 481,628.10, 664,657.56 and 274,892.37

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Solution

The fourth proportional to 481,628.10, 664,657.56 and 274,892.37 is: 379,357.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,628.10 : 664,657.56 = 274,892.37 : x
  2. Step 2: Convert to fraction form
    481,628.10/664,657.56 = 274,892.37/x
  3. Step 3: Cross multiply
    481,628.10x = 664,657.56 × 274,892.37
  4. Step 4: Simplify right side
    481,628.10x = 182,709,291,906.82
  5. Step 5: Solve for x
    x = 182,709,291,906.82/481,628.10
  6. Step 6: Final answer
    x = 379,357.62

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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.