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Finding the Fourth Proportional to 950,634.78, 1,311,876 and 548,226.78

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Solution

The fourth proportional to 950,634.78, 1,311,876 and 548,226.78 is: 756,552.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    950,634.78 : 1,311,876 = 548,226.78 : x
  2. Step 2: Convert to fraction form
    950,634.78/1,311,876 = 548,226.78/x
  3. Step 3: Cross multiply
    950,634.78x = 1,311,876 × 548,226.78
  4. Step 4: Simplify right side
    950,634.78x = 719,205,555,239.28
  5. Step 5: Solve for x
    x = 719,205,555,239.28/950,634.78
  6. Step 6: Final answer
    x = 756,552.96

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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.