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Finding the Fourth Proportional to 217,161.88, 325,786.39 and 75,012.35

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Solution

The fourth proportional to 217,161.88, 325,786.39 and 75,012.35 is: 112,533.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,161.88 : 325,786.39 = 75,012.35 : x
  2. Step 2: Convert to fraction form
    217,161.88/325,786.39 = 75,012.35/x
  3. Step 3: Cross multiply
    217,161.88x = 325,786.39 × 75,012.35
  4. Step 4: Simplify right side
    217,161.88x = 24,438,002,711.92
  5. Step 5: Solve for x
    x = 24,438,002,711.92/217,161.88
  6. Step 6: Final answer
    x = 112,533.58

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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.