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Finding the Fourth Proportional to 11,886.78, 17,832.18 and 5,966.48

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Solution

The fourth proportional to 11,886.78, 17,832.18 and 5,966.48 is: 8,950.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,886.78 : 17,832.18 = 5,966.48 : x
  2. Step 2: Convert to fraction form
    11,886.78/17,832.18 = 5,966.48/x
  3. Step 3: Cross multiply
    11,886.78x = 17,832.18 × 5,966.48
  4. Step 4: Simplify right side
    11,886.78x = 106,395,345.33
  5. Step 5: Solve for x
    x = 106,395,345.33/11,886.78
  6. Step 6: Final answer
    x = 8,950.73

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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.