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Finding the Fourth Proportional to 18,788.58, 25,851.42 and 16,262.64

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Solution

The fourth proportional to 18,788.58, 25,851.42 and 16,262.64 is: 22,375.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.58 : 25,851.42 = 16,262.64 : x
  2. Step 2: Convert to fraction form
    18,788.58/25,851.42 = 16,262.64/x
  3. Step 3: Cross multiply
    18,788.58x = 25,851.42 × 16,262.64
  4. Step 4: Simplify right side
    18,788.58x = 420,412,336.95
  5. Step 5: Solve for x
    x = 420,412,336.95/18,788.58
  6. Step 6: Final answer
    x = 22,375.95

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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.