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Finding the Fourth Proportional to 79,792.61, 119,716.25 and 27,239

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Solution

The fourth proportional to 79,792.61, 119,716.25 and 27,239 is: 40,867.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,792.61 : 119,716.25 = 27,239 : x
  2. Step 2: Convert to fraction form
    79,792.61/119,716.25 = 27,239/x
  3. Step 3: Cross multiply
    79,792.61x = 119,716.25 × 27,239
  4. Step 4: Simplify right side
    79,792.61x = 3,260,950,933.75
  5. Step 5: Solve for x
    x = 3,260,950,933.75/79,792.61
  6. Step 6: Final answer
    x = 40,867.83

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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.