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Finding the Fourth Proportional to 69,491.28, 104,235.90 and 22,109.25

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Solution

The fourth proportional to 69,491.28, 104,235.90 and 22,109.25 is: 33,163.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,491.28 : 104,235.90 = 22,109.25 : x
  2. Step 2: Convert to fraction form
    69,491.28/104,235.90 = 22,109.25/x
  3. Step 3: Cross multiply
    69,491.28x = 104,235.90 × 22,109.25
  4. Step 4: Simplify right side
    69,491.28x = 2,304,577,572.08
  5. Step 5: Solve for x
    x = 2,304,577,572.08/69,491.28
  6. Step 6: Final answer
    x = 33,163.55

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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.