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Finding the Fourth Proportional to 15,908.31, 21,949.52 and 8,832.96

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Solution

The fourth proportional to 15,908.31, 21,949.52 and 8,832.96 is: 12,187.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,908.31 : 21,949.52 = 8,832.96 : x
  2. Step 2: Convert to fraction form
    15,908.31/21,949.52 = 8,832.96/x
  3. Step 3: Cross multiply
    15,908.31x = 21,949.52 × 8,832.96
  4. Step 4: Simplify right side
    15,908.31x = 193,879,188.01
  5. Step 5: Solve for x
    x = 193,879,188.01/15,908.31
  6. Step 6: Final answer
    x = 12,187.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.