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Finding the Fourth Proportional to 18,204.75, 25,133.49 and 11,928.06

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Solution

The fourth proportional to 18,204.75, 25,133.49 and 11,928.06 is: 16,467.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,204.75 : 25,133.49 = 11,928.06 : x
  2. Step 2: Convert to fraction form
    18,204.75/25,133.49 = 11,928.06/x
  3. Step 3: Cross multiply
    18,204.75x = 25,133.49 × 11,928.06
  4. Step 4: Simplify right side
    18,204.75x = 299,793,776.73
  5. Step 5: Solve for x
    x = 299,793,776.73/18,204.75
  6. Step 6: Final answer
    x = 16,467.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.