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Finding the Fourth Proportional to 69,643.48, 104,333.66 and 53,984.44

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Solution

The fourth proportional to 69,643.48, 104,333.66 and 53,984.44 is: 80,874.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,643.48 : 104,333.66 = 53,984.44 : x
  2. Step 2: Convert to fraction form
    69,643.48/104,333.66 = 53,984.44/x
  3. Step 3: Cross multiply
    69,643.48x = 104,333.66 × 53,984.44
  4. Step 4: Simplify right side
    69,643.48x = 5,632,394,208.25
  5. Step 5: Solve for x
    x = 5,632,394,208.25/69,643.48
  6. Step 6: Final answer
    x = 80,874.68

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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.