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Finding the Fourth Proportional to 69,480.42, 104,219.88 and 16,889.96

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Solution

The fourth proportional to 69,480.42, 104,219.88 and 16,889.96 is: 25,334.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,480.42 : 104,219.88 = 16,889.96 : x
  2. Step 2: Convert to fraction form
    69,480.42/104,219.88 = 16,889.96/x
  3. Step 3: Cross multiply
    69,480.42x = 104,219.88 × 16,889.96
  4. Step 4: Simplify right side
    69,480.42x = 1,760,269,410.79
  5. Step 5: Solve for x
    x = 1,760,269,410.79/69,480.42
  6. Step 6: Final answer
    x = 25,334.75

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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.