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Finding the Fourth Proportional to 28,183.80, 38,891.02 and 16,851.09

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Solution

The fourth proportional to 28,183.80, 38,891.02 and 16,851.09 is: 23,252.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,183.80 : 38,891.02 = 16,851.09 : x
  2. Step 2: Convert to fraction form
    28,183.80/38,891.02 = 16,851.09/x
  3. Step 3: Cross multiply
    28,183.80x = 38,891.02 × 16,851.09
  4. Step 4: Simplify right side
    28,183.80x = 655,356,078.21
  5. Step 5: Solve for x
    x = 655,356,078.21/28,183.80
  6. Step 6: Final answer
    x = 23,252.94

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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.