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Finding the Fourth Proportional to 11,961.66, 18,027.54 and 11,961.66

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Solution

The fourth proportional to 11,961.66, 18,027.54 and 11,961.66 is: 18,027.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.66 : 18,027.54 = 11,961.66 : x
  2. Step 2: Convert to fraction form
    11,961.66/18,027.54 = 11,961.66/x
  3. Step 3: Cross multiply
    11,961.66x = 18,027.54 × 11,961.66
  4. Step 4: Simplify right side
    11,961.66x = 215,639,304.12
  5. Step 5: Solve for x
    x = 215,639,304.12/11,961.66
  6. Step 6: Final answer
    x = 18,027.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.