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Finding the Fourth Proportional to 70,292.78, 105,371.44 and 25,895.28

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Solution

The fourth proportional to 70,292.78, 105,371.44 and 25,895.28 is: 38,817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,292.78 : 105,371.44 = 25,895.28 : x
  2. Step 2: Convert to fraction form
    70,292.78/105,371.44 = 25,895.28/x
  3. Step 3: Cross multiply
    70,292.78x = 105,371.44 × 25,895.28
  4. Step 4: Simplify right side
    70,292.78x = 2,728,622,942.80
  5. Step 5: Solve for x
    x = 2,728,622,942.80/70,292.78
  6. Step 6: Final answer
    x = 38,817.97

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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.