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Finding the Fourth Proportional to 13,596.85, 18,763.37 and 7,629.97

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Solution

The fourth proportional to 13,596.85, 18,763.37 and 7,629.97 is: 10,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,596.85 : 18,763.37 = 7,629.97 : x
  2. Step 2: Convert to fraction form
    13,596.85/18,763.37 = 7,629.97/x
  3. Step 3: Cross multiply
    13,596.85x = 18,763.37 × 7,629.97
  4. Step 4: Simplify right side
    13,596.85x = 143,163,912.05
  5. Step 5: Solve for x
    x = 143,163,912.05/13,596.85
  6. Step 6: Final answer
    x = 10,529.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.