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Finding the Fourth Proportional to 69,405.28, 104,127.36 and 27,881.44

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Solution

The fourth proportional to 69,405.28, 104,127.36 and 27,881.44 is: 41,829.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,405.28 : 104,127.36 = 27,881.44 : x
  2. Step 2: Convert to fraction form
    69,405.28/104,127.36 = 27,881.44/x
  3. Step 3: Cross multiply
    69,405.28x = 104,127.36 × 27,881.44
  4. Step 4: Simplify right side
    69,405.28x = 2,903,220,740.20
  5. Step 5: Solve for x
    x = 2,903,220,740.20/69,405.28
  6. Step 6: Final answer
    x = 41,829.97

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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.