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Finding the Fourth Proportional to 7,959.72, 11,942.96 and 4,261

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Solution

The fourth proportional to 7,959.72, 11,942.96 and 4,261 is: 6,393.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.72 : 11,942.96 = 4,261 : x
  2. Step 2: Convert to fraction form
    7,959.72/11,942.96 = 4,261/x
  3. Step 3: Cross multiply
    7,959.72x = 11,942.96 × 4,261
  4. Step 4: Simplify right side
    7,959.72x = 50,888,952.56
  5. Step 5: Solve for x
    x = 50,888,952.56/7,959.72
  6. Step 6: Final answer
    x = 6,393.31

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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.