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Finding the Fourth Proportional to 17,231.80, 25,815.30 and 16,065.40

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Solution

The fourth proportional to 17,231.80, 25,815.30 and 16,065.40 is: 24,067.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,231.80 : 25,815.30 = 16,065.40 : x
  2. Step 2: Convert to fraction form
    17,231.80/25,815.30 = 16,065.40/x
  3. Step 3: Cross multiply
    17,231.80x = 25,815.30 × 16,065.40
  4. Step 4: Simplify right side
    17,231.80x = 414,733,120.62
  5. Step 5: Solve for x
    x = 414,733,120.62/17,231.80
  6. Step 6: Final answer
    x = 24,067.89

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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.