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Finding the Fourth Proportional to 19,472.74, 26,872.92 and 11,918.92

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Solution

The fourth proportional to 19,472.74, 26,872.92 and 11,918.92 is: 16,448.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,472.74 : 26,872.92 = 11,918.92 : x
  2. Step 2: Convert to fraction form
    19,472.74/26,872.92 = 11,918.92/x
  3. Step 3: Cross multiply
    19,472.74x = 26,872.92 × 11,918.92
  4. Step 4: Simplify right side
    19,472.74x = 320,296,183.65
  5. Step 5: Solve for x
    x = 320,296,183.65/19,472.74
  6. Step 6: Final answer
    x = 16,448.44

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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.