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Finding the Fourth Proportional to 17,101.08, 25,660.65 and 12,135.54

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Solution

The fourth proportional to 17,101.08, 25,660.65 and 12,135.54 is: 18,209.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,101.08 : 25,660.65 = 12,135.54 : x
  2. Step 2: Convert to fraction form
    17,101.08/25,660.65 = 12,135.54/x
  3. Step 3: Cross multiply
    17,101.08x = 25,660.65 × 12,135.54
  4. Step 4: Simplify right side
    17,101.08x = 311,405,844.50
  5. Step 5: Solve for x
    x = 311,405,844.50/17,101.08
  6. Step 6: Final answer
    x = 18,209.72

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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.