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Finding the Fourth Proportional to 8,716.14, 13,074.21 and 2,874.42

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Solution

The fourth proportional to 8,716.14, 13,074.21 and 2,874.42 is: 4,311.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.14 : 13,074.21 = 2,874.42 : x
  2. Step 2: Convert to fraction form
    8,716.14/13,074.21 = 2,874.42/x
  3. Step 3: Cross multiply
    8,716.14x = 13,074.21 × 2,874.42
  4. Step 4: Simplify right side
    8,716.14x = 37,580,770.71
  5. Step 5: Solve for x
    x = 37,580,770.71/8,716.14
  6. Step 6: Final answer
    x = 4,311.63

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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.