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Finding the Fourth Proportional to 79,412.70, 109,591.25 and 43,605.02

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Solution

The fourth proportional to 79,412.70, 109,591.25 and 43,605.02 is: 60,175.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,412.70 : 109,591.25 = 43,605.02 : x
  2. Step 2: Convert to fraction form
    79,412.70/109,591.25 = 43,605.02/x
  3. Step 3: Cross multiply
    79,412.70x = 109,591.25 × 43,605.02
  4. Step 4: Simplify right side
    79,412.70x = 4,778,728,917.83
  5. Step 5: Solve for x
    x = 4,778,728,917.83/79,412.70
  6. Step 6: Final answer
    x = 60,175.87

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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.