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Finding the Fourth Proportional to 5,706.70, 8,561.55 and 1,811.10

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Solution

The fourth proportional to 5,706.70, 8,561.55 and 1,811.10 is: 2,717.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,706.70 : 8,561.55 = 1,811.10 : x
  2. Step 2: Convert to fraction form
    5,706.70/8,561.55 = 1,811.10/x
  3. Step 3: Cross multiply
    5,706.70x = 8,561.55 × 1,811.10
  4. Step 4: Simplify right side
    5,706.70x = 15,505,823.21
  5. Step 5: Solve for x
    x = 15,505,823.21/5,706.70
  6. Step 6: Final answer
    x = 2,717.13

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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.