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Finding the Fourth Proportional to 414,803.78, 622,067.26 and 162,018.69

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Solution

The fourth proportional to 414,803.78, 622,067.26 and 162,018.69 is: 242,973.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,803.78 : 622,067.26 = 162,018.69 : x
  2. Step 2: Convert to fraction form
    414,803.78/622,067.26 = 162,018.69/x
  3. Step 3: Cross multiply
    414,803.78x = 622,067.26 × 162,018.69
  4. Step 4: Simplify right side
    414,803.78x = 100,786,522,557.09
  5. Step 5: Solve for x
    x = 100,786,522,557.09/414,803.78
  6. Step 6: Final answer
    x = 242,973.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.