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Finding the Fourth Proportional to 19,863.71, 27,404.08 and 12,794.23

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Solution

The fourth proportional to 19,863.71, 27,404.08 and 12,794.23 is: 17,650.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.71 : 27,404.08 = 12,794.23 : x
  2. Step 2: Convert to fraction form
    19,863.71/27,404.08 = 12,794.23/x
  3. Step 3: Cross multiply
    19,863.71x = 27,404.08 × 12,794.23
  4. Step 4: Simplify right side
    19,863.71x = 350,614,001.96
  5. Step 5: Solve for x
    x = 350,614,001.96/19,863.71
  6. Step 6: Final answer
    x = 17,650.99

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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.