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Finding the Fourth Proportional to 303,996.54, 419,784.21 and 189,470.64

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Solution

The fourth proportional to 303,996.54, 419,784.21 and 189,470.64 is: 261,637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,996.54 : 419,784.21 = 189,470.64 : x
  2. Step 2: Convert to fraction form
    303,996.54/419,784.21 = 189,470.64/x
  3. Step 3: Cross multiply
    303,996.54x = 419,784.21 × 189,470.64
  4. Step 4: Simplify right side
    303,996.54x = 79,536,782,930.59
  5. Step 5: Solve for x
    x = 79,536,782,930.59/303,996.54
  6. Step 6: Final answer
    x = 261,637.13

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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.