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Finding the Fourth Proportional to 69,891.72, 104,853.96 and 23,144.60

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Solution

The fourth proportional to 69,891.72, 104,853.96 and 23,144.60 is: 34,722.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,891.72 : 104,853.96 = 23,144.60 : x
  2. Step 2: Convert to fraction form
    69,891.72/104,853.96 = 23,144.60/x
  3. Step 3: Cross multiply
    69,891.72x = 104,853.96 × 23,144.60
  4. Step 4: Simplify right side
    69,891.72x = 2,426,802,962.62
  5. Step 5: Solve for x
    x = 2,426,802,962.62/69,891.72
  6. Step 6: Final answer
    x = 34,722.32

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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.