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Finding the Fourth Proportional to 5,706.72, 8,560.80 and 1,811.16

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Solution

The fourth proportional to 5,706.72, 8,560.80 and 1,811.16 is: 2,716.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,706.72 : 8,560.80 = 1,811.16 : x
  2. Step 2: Convert to fraction form
    5,706.72/8,560.80 = 1,811.16/x
  3. Step 3: Cross multiply
    5,706.72x = 8,560.80 × 1,811.16
  4. Step 4: Simplify right side
    5,706.72x = 15,504,978.53
  5. Step 5: Solve for x
    x = 15,504,978.53/5,706.72
  6. Step 6: Final answer
    x = 2,716.97

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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.