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Finding the Fourth Proportional to 18,573.16, 27,868.92 and 8,713.19

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Solution

The fourth proportional to 18,573.16, 27,868.92 and 8,713.19 is: 13,074.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.16 : 27,868.92 = 8,713.19 : x
  2. Step 2: Convert to fraction form
    18,573.16/27,868.92 = 8,713.19/x
  3. Step 3: Cross multiply
    18,573.16x = 27,868.92 × 8,713.19
  4. Step 4: Simplify right side
    18,573.16x = 242,827,195.05
  5. Step 5: Solve for x
    x = 242,827,195.05/18,573.16
  6. Step 6: Final answer
    x = 13,074.09

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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.