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Finding the Fourth Proportional to 7,959.96, 11,940.06 and 2,116.62

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Solution

The fourth proportional to 7,959.96, 11,940.06 and 2,116.62 is: 3,174.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.96 : 11,940.06 = 2,116.62 : x
  2. Step 2: Convert to fraction form
    7,959.96/11,940.06 = 2,116.62/x
  3. Step 3: Cross multiply
    7,959.96x = 11,940.06 × 2,116.62
  4. Step 4: Simplify right side
    7,959.96x = 25,272,569.80
  5. Step 5: Solve for x
    x = 25,272,569.80/7,959.96
  6. Step 6: Final answer
    x = 3,174.96

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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.