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Finding the Fourth Proportional to 5,706.86, 8,560.20 and 1,811.22

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Solution

The fourth proportional to 5,706.86, 8,560.20 and 1,811.22 is: 2,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,706.86 : 8,560.20 = 1,811.22 : x
  2. Step 2: Convert to fraction form
    5,706.86/8,560.20 = 1,811.22/x
  3. Step 3: Cross multiply
    5,706.86x = 8,560.20 × 1,811.22
  4. Step 4: Simplify right side
    5,706.86x = 15,504,405.44
  5. Step 5: Solve for x
    x = 15,504,405.44/5,706.86
  6. Step 6: Final answer
    x = 2,716.80

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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.