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Finding the Fourth Proportional to 14,936.52, 20,611.69 and 8,222.01

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Solution

The fourth proportional to 14,936.52, 20,611.69 and 8,222.01 is: 11,345.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,936.52 : 20,611.69 = 8,222.01 : x
  2. Step 2: Convert to fraction form
    14,936.52/20,611.69 = 8,222.01/x
  3. Step 3: Cross multiply
    14,936.52x = 20,611.69 × 8,222.01
  4. Step 4: Simplify right side
    14,936.52x = 169,469,521.30
  5. Step 5: Solve for x
    x = 169,469,521.30/14,936.52
  6. Step 6: Final answer
    x = 11,345.98

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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.