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Finding the Fourth Proportional to 69,203.82, 94,878.44 and 67,942.70

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Solution

The fourth proportional to 69,203.82, 94,878.44 and 67,942.70 is: 93,149.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,203.82 : 94,878.44 = 67,942.70 : x
  2. Step 2: Convert to fraction form
    69,203.82/94,878.44 = 67,942.70/x
  3. Step 3: Cross multiply
    69,203.82x = 94,878.44 × 67,942.70
  4. Step 4: Simplify right side
    69,203.82x = 6,446,296,571.28
  5. Step 5: Solve for x
    x = 6,446,296,571.28/69,203.82
  6. Step 6: Final answer
    x = 93,149.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.