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Finding the Fourth Proportional to 79,112.69, 109,175.64 and 43,304.97

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Solution

The fourth proportional to 79,112.69, 109,175.64 and 43,304.97 is: 59,760.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,112.69 : 109,175.64 = 43,304.97 : x
  2. Step 2: Convert to fraction form
    79,112.69/109,175.64 = 43,304.97/x
  3. Step 3: Cross multiply
    79,112.69x = 109,175.64 × 43,304.97
  4. Step 4: Simplify right side
    79,112.69x = 4,727,847,814.93
  5. Step 5: Solve for x
    x = 4,727,847,814.93/79,112.69
  6. Step 6: Final answer
    x = 59,760.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.