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Finding the Fourth Proportional to 79,678.60, 119,517.90 and 23,519.48

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Solution

The fourth proportional to 79,678.60, 119,517.90 and 23,519.48 is: 35,279.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,678.60 : 119,517.90 = 23,519.48 : x
  2. Step 2: Convert to fraction form
    79,678.60/119,517.90 = 23,519.48/x
  3. Step 3: Cross multiply
    79,678.60x = 119,517.90 × 23,519.48
  4. Step 4: Simplify right side
    79,678.60x = 2,810,998,858.69
  5. Step 5: Solve for x
    x = 2,810,998,858.69/79,678.60
  6. Step 6: Final answer
    x = 35,279.22

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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.