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Finding the Fourth Proportional to 18,162.74, 27,255.04 and 7,074.66

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Solution

The fourth proportional to 18,162.74, 27,255.04 and 7,074.66 is: 10,616.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,162.74 : 27,255.04 = 7,074.66 : x
  2. Step 2: Convert to fraction form
    18,162.74/27,255.04 = 7,074.66/x
  3. Step 3: Cross multiply
    18,162.74x = 27,255.04 × 7,074.66
  4. Step 4: Simplify right side
    18,162.74x = 192,820,141.29
  5. Step 5: Solve for x
    x = 192,820,141.29/18,162.74
  6. Step 6: Final answer
    x = 10,616.25

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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.