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Finding the Fourth Proportional to 5,516.44, 7,611.15 and 3,158.44

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Solution

The fourth proportional to 5,516.44, 7,611.15 and 3,158.44 is: 4,357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,516.44 : 7,611.15 = 3,158.44 : x
  2. Step 2: Convert to fraction form
    5,516.44/7,611.15 = 3,158.44/x
  3. Step 3: Cross multiply
    5,516.44x = 7,611.15 × 3,158.44
  4. Step 4: Simplify right side
    5,516.44x = 24,039,360.61
  5. Step 5: Solve for x
    x = 24,039,360.61/5,516.44
  6. Step 6: Final answer
    x = 4,357.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.