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Finding the Fourth Proportional to 17,101.34, 25,660.89 and 12,940.11

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Solution

The fourth proportional to 17,101.34, 25,660.89 and 12,940.11 is: 19,416.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,101.34 : 25,660.89 = 12,940.11 : x
  2. Step 2: Convert to fraction form
    17,101.34/25,660.89 = 12,940.11/x
  3. Step 3: Cross multiply
    17,101.34x = 25,660.89 × 12,940.11
  4. Step 4: Simplify right side
    17,101.34x = 332,054,739.30
  5. Step 5: Solve for x
    x = 332,054,739.30/17,101.34
  6. Step 6: Final answer
    x = 19,416.88

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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.