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Finding the Fourth Proportional to 69,899.75, 104,745.92 and 51,341.03

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Solution

The fourth proportional to 69,899.75, 104,745.92 and 51,341.03 is: 76,935.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,899.75 : 104,745.92 = 51,341.03 : x
  2. Step 2: Convert to fraction form
    69,899.75/104,745.92 = 51,341.03/x
  3. Step 3: Cross multiply
    69,899.75x = 104,745.92 × 51,341.03
  4. Step 4: Simplify right side
    69,899.75x = 5,377,762,640.66
  5. Step 5: Solve for x
    x = 5,377,762,640.66/69,899.75
  6. Step 6: Final answer
    x = 76,935.37

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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.