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Finding the Fourth Proportional to 16,786.80, 25,179.12 and 5,100.12

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Solution

The fourth proportional to 16,786.80, 25,179.12 and 5,100.12 is: 7,649.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,786.80 : 25,179.12 = 5,100.12 : x
  2. Step 2: Convert to fraction form
    16,786.80/25,179.12 = 5,100.12/x
  3. Step 3: Cross multiply
    16,786.80x = 25,179.12 × 5,100.12
  4. Step 4: Simplify right side
    16,786.80x = 128,416,533.49
  5. Step 5: Solve for x
    x = 128,416,533.49/16,786.80
  6. Step 6: Final answer
    x = 7,649.85

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1.5x scale

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.