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Finding the Fourth Proportional to 11,651.92, 16,079.52 and 6,936.28

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Solution

The fourth proportional to 11,651.92, 16,079.52 and 6,936.28 is: 9,571.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,651.92 : 16,079.52 = 6,936.28 : x
  2. Step 2: Convert to fraction form
    11,651.92/16,079.52 = 6,936.28/x
  3. Step 3: Cross multiply
    11,651.92x = 16,079.52 × 6,936.28
  4. Step 4: Simplify right side
    11,651.92x = 111,532,052.99
  5. Step 5: Solve for x
    x = 111,532,052.99/11,651.92
  6. Step 6: Final answer
    x = 9,571.99

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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.