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Finding the Fourth Proportional to 19,866.11, 27,423.04 and 11,906.80

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Solution

The fourth proportional to 19,866.11, 27,423.04 and 11,906.80 is: 16,436.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.11 : 27,423.04 = 11,906.80 : x
  2. Step 2: Convert to fraction form
    19,866.11/27,423.04 = 11,906.80/x
  3. Step 3: Cross multiply
    19,866.11x = 27,423.04 × 11,906.80
  4. Step 4: Simplify right side
    19,866.11x = 326,520,610.16
  5. Step 5: Solve for x
    x = 326,520,610.16/19,866.11
  6. Step 6: Final answer
    x = 16,436.06

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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.