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Finding the Fourth Proportional to 26,429.44, 39,644.16 and 7,961.44

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Solution

The fourth proportional to 26,429.44, 39,644.16 and 7,961.44 is: 11,942.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,429.44 : 39,644.16 = 7,961.44 : x
  2. Step 2: Convert to fraction form
    26,429.44/39,644.16 = 7,961.44/x
  3. Step 3: Cross multiply
    26,429.44x = 39,644.16 × 7,961.44
  4. Step 4: Simplify right side
    26,429.44x = 315,624,601.19
  5. Step 5: Solve for x
    x = 315,624,601.19/26,429.44
  6. Step 6: Final answer
    x = 11,942.16

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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.