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Finding the Fourth Proportional to 22,288.64, 30,757.84 and 12,216.84

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Solution

The fourth proportional to 22,288.64, 30,757.84 and 12,216.84 is: 16,858.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,288.64 : 30,757.84 = 12,216.84 : x
  2. Step 2: Convert to fraction form
    22,288.64/30,757.84 = 12,216.84/x
  3. Step 3: Cross multiply
    22,288.64x = 30,757.84 × 12,216.84
  4. Step 4: Simplify right side
    22,288.64x = 375,763,610.03
  5. Step 5: Solve for x
    x = 375,763,610.03/22,288.64
  6. Step 6: Final answer
    x = 16,858.97

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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.