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Finding the Fourth Proportional to 18,661.06, 27,983.31 and 9,893.92

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Solution

The fourth proportional to 18,661.06, 27,983.31 and 9,893.92 is: 14,836.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.06 : 27,983.31 = 9,893.92 : x
  2. Step 2: Convert to fraction form
    18,661.06/27,983.31 = 9,893.92/x
  3. Step 3: Cross multiply
    18,661.06x = 27,983.31 × 9,893.92
  4. Step 4: Simplify right side
    18,661.06x = 276,864,630.48
  5. Step 5: Solve for x
    x = 276,864,630.48/18,661.06
  6. Step 6: Final answer
    x = 14,836.49

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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.