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Finding the Fourth Proportional to 18,591.13, 27,891.08 and 6,111.19

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Solution

The fourth proportional to 18,591.13, 27,891.08 and 6,111.19 is: 9,168.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.13 : 27,891.08 = 6,111.19 : x
  2. Step 2: Convert to fraction form
    18,591.13/27,891.08 = 6,111.19/x
  3. Step 3: Cross multiply
    18,591.13x = 27,891.08 × 6,111.19
  4. Step 4: Simplify right side
    18,591.13x = 170,447,634.74
  5. Step 5: Solve for x
    x = 170,447,634.74/18,591.13
  6. Step 6: Final answer
    x = 9,168.22

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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.