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Finding the Fourth Proportional to 16,481.17, 22,745.49 and 9,409.87

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Solution

The fourth proportional to 16,481.17, 22,745.49 and 9,409.87 is: 12,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,481.17 : 22,745.49 = 9,409.87 : x
  2. Step 2: Convert to fraction form
    16,481.17/22,745.49 = 9,409.87/x
  3. Step 3: Cross multiply
    16,481.17x = 22,745.49 × 9,409.87
  4. Step 4: Simplify right side
    16,481.17x = 214,031,990.26
  5. Step 5: Solve for x
    x = 214,031,990.26/16,481.17
  6. Step 6: Final answer
    x = 12,986.46

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1.5x scale

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.