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Finding the Fourth Proportional to 16,789.80, 25,192.80 and 11,848.80

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Solution

The fourth proportional to 16,789.80, 25,192.80 and 11,848.80 is: 17,778.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,789.80 : 25,192.80 = 11,848.80 : x
  2. Step 2: Convert to fraction form
    16,789.80/25,192.80 = 11,848.80/x
  3. Step 3: Cross multiply
    16,789.80x = 25,192.80 × 11,848.80
  4. Step 4: Simplify right side
    16,789.80x = 298,504,448.64
  5. Step 5: Solve for x
    x = 298,504,448.64/16,789.80
  6. Step 6: Final answer
    x = 17,778.92

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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.