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Finding the Fourth Proportional to 16,912.80, 25,375.60 and 7,058.08

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Solution

The fourth proportional to 16,912.80, 25,375.60 and 7,058.08 is: 10,589.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,912.80 : 25,375.60 = 7,058.08 : x
  2. Step 2: Convert to fraction form
    16,912.80/25,375.60 = 7,058.08/x
  3. Step 3: Cross multiply
    16,912.80x = 25,375.60 × 7,058.08
  4. Step 4: Simplify right side
    16,912.80x = 179,103,014.85
  5. Step 5: Solve for x
    x = 179,103,014.85/16,912.80
  6. Step 6: Final answer
    x = 10,589.79

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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.