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Finding the Fourth Proportional to 18,036.80, 27,060.65 and 8,674.16

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Solution

The fourth proportional to 18,036.80, 27,060.65 and 8,674.16 is: 13,013.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,036.80 : 27,060.65 = 8,674.16 : x
  2. Step 2: Convert to fraction form
    18,036.80/27,060.65 = 8,674.16/x
  3. Step 3: Cross multiply
    18,036.80x = 27,060.65 × 8,674.16
  4. Step 4: Simplify right side
    18,036.80x = 234,728,229.13
  5. Step 5: Solve for x
    x = 234,728,229.13/18,036.80
  6. Step 6: Final answer
    x = 13,013.85

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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.