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Finding the Fourth Proportional to 15,917.69, 21,966.41 and 8,844.11

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Solution

The fourth proportional to 15,917.69, 21,966.41 and 8,844.11 is: 12,204.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,917.69 : 21,966.41 = 8,844.11 : x
  2. Step 2: Convert to fraction form
    15,917.69/21,966.41 = 8,844.11/x
  3. Step 3: Cross multiply
    15,917.69x = 21,966.41 × 8,844.11
  4. Step 4: Simplify right side
    15,917.69x = 194,273,330.17
  5. Step 5: Solve for x
    x = 194,273,330.17/15,917.69
  6. Step 6: Final answer
    x = 12,204.87

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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.