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Finding the Fourth Proportional to 14,936.50, 20,611.88 and 8,222.12

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Solution

The fourth proportional to 14,936.50, 20,611.88 and 8,222.12 is: 11,346.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,936.50 : 20,611.88 = 8,222.12 : x
  2. Step 2: Convert to fraction form
    14,936.50/20,611.88 = 8,222.12/x
  3. Step 3: Cross multiply
    14,936.50x = 20,611.88 × 8,222.12
  4. Step 4: Simplify right side
    14,936.50x = 169,473,350.79
  5. Step 5: Solve for x
    x = 169,473,350.79/14,936.50
  6. Step 6: Final answer
    x = 11,346.26

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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.