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Finding the Fourth Proportional to 69,502.46, 104,252.78 and 16,912

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Solution

The fourth proportional to 69,502.46, 104,252.78 and 16,912 is: 25,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,502.46 : 104,252.78 = 16,912 : x
  2. Step 2: Convert to fraction form
    69,502.46/104,252.78 = 16,912/x
  3. Step 3: Cross multiply
    69,502.46x = 104,252.78 × 16,912
  4. Step 4: Simplify right side
    69,502.46x = 1,763,123,015.36
  5. Step 5: Solve for x
    x = 1,763,123,015.36/69,502.46
  6. Step 6: Final answer
    x = 25,367.78

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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.