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Finding the Fourth Proportional to 13,963.95, 20,950.92 and 8,691.44

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Solution

The fourth proportional to 13,963.95, 20,950.92 and 8,691.44 is: 13,040.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,963.95 : 20,950.92 = 8,691.44 : x
  2. Step 2: Convert to fraction form
    13,963.95/20,950.92 = 8,691.44/x
  3. Step 3: Cross multiply
    13,963.95x = 20,950.92 × 8,691.44
  4. Step 4: Simplify right side
    13,963.95x = 182,093,559.37
  5. Step 5: Solve for x
    x = 182,093,559.37/13,963.95
  6. Step 6: Final answer
    x = 13,040.26

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1.5x scale

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.