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Finding the Fourth Proportional to 18,561.44, 27,828.93 and 8,695.33

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Solution

The fourth proportional to 18,561.44, 27,828.93 and 8,695.33 is: 13,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.44 : 27,828.93 = 8,695.33 : x
  2. Step 2: Convert to fraction form
    18,561.44/27,828.93 = 8,695.33/x
  3. Step 3: Cross multiply
    18,561.44x = 27,828.93 × 8,695.33
  4. Step 4: Simplify right side
    18,561.44x = 241,981,729.90
  5. Step 5: Solve for x
    x = 241,981,729.90/18,561.44
  6. Step 6: Final answer
    x = 13,036.80

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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.