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Finding the Fourth Proportional to 11,976.78, 18,005.72 and 9,653.10

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Solution

The fourth proportional to 11,976.78, 18,005.72 and 9,653.10 is: 14,512.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,976.78 : 18,005.72 = 9,653.10 : x
  2. Step 2: Convert to fraction form
    11,976.78/18,005.72 = 9,653.10/x
  3. Step 3: Cross multiply
    11,976.78x = 18,005.72 × 9,653.10
  4. Step 4: Simplify right side
    11,976.78x = 173,811,015.73
  5. Step 5: Solve for x
    x = 173,811,015.73/11,976.78
  6. Step 6: Final answer
    x = 14,512.33

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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.