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Finding the Fourth Proportional to 259,857.75, 389,786.64 and 62,865.75

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Solution

The fourth proportional to 259,857.75, 389,786.64 and 62,865.75 is: 94,298.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,857.75 : 389,786.64 = 62,865.75 : x
  2. Step 2: Convert to fraction form
    259,857.75/389,786.64 = 62,865.75/x
  3. Step 3: Cross multiply
    259,857.75x = 389,786.64 × 62,865.75
  4. Step 4: Simplify right side
    259,857.75x = 24,504,229,463.58
  5. Step 5: Solve for x
    x = 24,504,229,463.58/259,857.75
  6. Step 6: Final answer
    x = 94,298.63

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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.