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Finding the Fourth Proportional to 69,993.91, 104,807.85 and 38,338.12

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Solution

The fourth proportional to 69,993.91, 104,807.85 and 38,338.12 is: 57,406.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,993.91 : 104,807.85 = 38,338.12 : x
  2. Step 2: Convert to fraction form
    69,993.91/104,807.85 = 38,338.12/x
  3. Step 3: Cross multiply
    69,993.91x = 104,807.85 × 38,338.12
  4. Step 4: Simplify right side
    69,993.91x = 4,018,135,930.24
  5. Step 5: Solve for x
    x = 4,018,135,930.24/69,993.91
  6. Step 6: Final answer
    x = 57,406.94

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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.