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Finding the Fourth Proportional to 18,398.79, 27,602.25 and 6,711.96

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Solution

The fourth proportional to 18,398.79, 27,602.25 and 6,711.96 is: 10,069.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.79 : 27,602.25 = 6,711.96 : x
  2. Step 2: Convert to fraction form
    18,398.79/27,602.25 = 6,711.96/x
  3. Step 3: Cross multiply
    18,398.79x = 27,602.25 × 6,711.96
  4. Step 4: Simplify right side
    18,398.79x = 185,265,197.91
  5. Step 5: Solve for x
    x = 185,265,197.91/18,398.79
  6. Step 6: Final answer
    x = 10,069.42

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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.