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Finding the Fourth Proportional to 7,076.88, 10,611.18 and 4,149

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Solution

The fourth proportional to 7,076.88, 10,611.18 and 4,149 is: 6,221.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,076.88 : 10,611.18 = 4,149 : x
  2. Step 2: Convert to fraction form
    7,076.88/10,611.18 = 4,149/x
  3. Step 3: Cross multiply
    7,076.88x = 10,611.18 × 4,149
  4. Step 4: Simplify right side
    7,076.88x = 44,025,785.82
  5. Step 5: Solve for x
    x = 44,025,785.82/7,076.88
  6. Step 6: Final answer
    x = 6,221.07

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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.