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Finding the Fourth Proportional to 27,611.92, 41,410.90 and 7,890.58

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Solution

The fourth proportional to 27,611.92, 41,410.90 and 7,890.58 is: 11,833.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,611.92 : 41,410.90 = 7,890.58 : x
  2. Step 2: Convert to fraction form
    27,611.92/41,410.90 = 7,890.58/x
  3. Step 3: Cross multiply
    27,611.92x = 41,410.90 × 7,890.58
  4. Step 4: Simplify right side
    27,611.92x = 326,756,019.32
  5. Step 5: Solve for x
    x = 326,756,019.32/27,611.92
  6. Step 6: Final answer
    x = 11,833.88

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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.