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Finding the Fourth Proportional to 18,655.48, 27,982.30 and 6,967.79

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Solution

The fourth proportional to 18,655.48, 27,982.30 and 6,967.79 is: 10,451.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.48 : 27,982.30 = 6,967.79 : x
  2. Step 2: Convert to fraction form
    18,655.48/27,982.30 = 6,967.79/x
  3. Step 3: Cross multiply
    18,655.48x = 27,982.30 × 6,967.79
  4. Step 4: Simplify right side
    18,655.48x = 194,974,632.79
  5. Step 5: Solve for x
    x = 194,974,632.79/18,655.48
  6. Step 6: Final answer
    x = 10,451.33

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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.