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Finding the Fourth Proportional to 18,467.70, 27,701.55 and 16,854.90

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Solution

The fourth proportional to 18,467.70, 27,701.55 and 16,854.90 is: 25,282.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,467.70 : 27,701.55 = 16,854.90 : x
  2. Step 2: Convert to fraction form
    18,467.70/27,701.55 = 16,854.90/x
  3. Step 3: Cross multiply
    18,467.70x = 27,701.55 × 16,854.90
  4. Step 4: Simplify right side
    18,467.70x = 466,906,855.10
  5. Step 5: Solve for x
    x = 466,906,855.10/18,467.70
  6. Step 6: Final answer
    x = 25,282.35

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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.