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Finding the Fourth Proportional to 18,599.91, 27,896.79 and 6,120.09

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Solution

The fourth proportional to 18,599.91, 27,896.79 and 6,120.09 is: 9,179.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,599.91 : 27,896.79 = 6,120.09 : x
  2. Step 2: Convert to fraction form
    18,599.91/27,896.79 = 6,120.09/x
  3. Step 3: Cross multiply
    18,599.91x = 27,896.79 × 6,120.09
  4. Step 4: Simplify right side
    18,599.91x = 170,730,865.51
  5. Step 5: Solve for x
    x = 170,730,865.51/18,599.91
  6. Step 6: Final answer
    x = 9,179.12

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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.