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Finding the Fourth Proportional to 22,122.62, 30,529.22 and 12,186.62

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Solution

The fourth proportional to 22,122.62, 30,529.22 and 12,186.62 is: 16,817.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,122.62 : 30,529.22 = 12,186.62 : x
  2. Step 2: Convert to fraction form
    22,122.62/30,529.22 = 12,186.62/x
  3. Step 3: Cross multiply
    22,122.62x = 30,529.22 × 12,186.62
  4. Step 4: Simplify right side
    22,122.62x = 372,048,003.04
  5. Step 5: Solve for x
    x = 372,048,003.04/22,122.62
  6. Step 6: Final answer
    x = 16,817.54

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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.