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Finding the Fourth Proportional to 18,447.57, 27,661.53 and 7,206.73

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Solution

The fourth proportional to 18,447.57, 27,661.53 and 7,206.73 is: 10,806.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.57 : 27,661.53 = 7,206.73 : x
  2. Step 2: Convert to fraction form
    18,447.57/27,661.53 = 7,206.73/x
  3. Step 3: Cross multiply
    18,447.57x = 27,661.53 × 7,206.73
  4. Step 4: Simplify right side
    18,447.57x = 199,349,269.66
  5. Step 5: Solve for x
    x = 199,349,269.66/18,447.57
  6. Step 6: Final answer
    x = 10,806.26

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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.