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Finding the Fourth Proportional to 618,364.06, 928,054.77 and 263,778.46

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Solution

The fourth proportional to 618,364.06, 928,054.77 and 263,778.46 is: 395,884.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,364.06 : 928,054.77 = 263,778.46 : x
  2. Step 2: Convert to fraction form
    618,364.06/928,054.77 = 263,778.46/x
  3. Step 3: Cross multiply
    618,364.06x = 928,054.77 × 263,778.46
  4. Step 4: Simplify right side
    618,364.06x = 244,800,854,716.95
  5. Step 5: Solve for x
    x = 244,800,854,716.95/618,364.06
  6. Step 6: Final answer
    x = 395,884.68

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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.