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Finding the Fourth Proportional to 17,995.06, 26,993.94 and 8,139.88

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Solution

The fourth proportional to 17,995.06, 26,993.94 and 8,139.88 is: 12,210.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,995.06 : 26,993.94 = 8,139.88 : x
  2. Step 2: Convert to fraction form
    17,995.06/26,993.94 = 8,139.88/x
  3. Step 3: Cross multiply
    17,995.06x = 26,993.94 × 8,139.88
  4. Step 4: Simplify right side
    17,995.06x = 219,727,432.33
  5. Step 5: Solve for x
    x = 219,727,432.33/17,995.06
  6. Step 6: Final answer
    x = 12,210.43

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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.