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Finding the Fourth Proportional to 16,979.00, 25,474.57 and 8,661.11

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Solution

The fourth proportional to 16,979.00, 25,474.57 and 8,661.11 is: 12,994.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,979.00 : 25,474.57 = 8,661.11 : x
  2. Step 2: Convert to fraction form
    16,979.00/25,474.57 = 8,661.11/x
  3. Step 3: Cross multiply
    16,979.00x = 25,474.57 × 8,661.11
  4. Step 4: Simplify right side
    16,979.00x = 220,637,903.95
  5. Step 5: Solve for x
    x = 220,637,903.95/16,979.00
  6. Step 6: Final answer
    x = 12,994.76

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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.