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Finding the Fourth Proportional to 22,676.64, 33,942.15 and 12,120.24

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Solution

The fourth proportional to 22,676.64, 33,942.15 and 12,120.24 is: 18,141.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,676.64 : 33,942.15 = 12,120.24 : x
  2. Step 2: Convert to fraction form
    22,676.64/33,942.15 = 12,120.24/x
  3. Step 3: Cross multiply
    22,676.64x = 33,942.15 × 12,120.24
  4. Step 4: Simplify right side
    22,676.64x = 411,387,004.12
  5. Step 5: Solve for x
    x = 411,387,004.12/22,676.64
  6. Step 6: Final answer
    x = 18,141.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.