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Finding the Fourth Proportional to 79,171.99, 109,251.66 and 43,356.22

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Solution

The fourth proportional to 79,171.99, 109,251.66 and 43,356.22 is: 59,828.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,171.99 : 109,251.66 = 43,356.22 : x
  2. Step 2: Convert to fraction form
    79,171.99/109,251.66 = 43,356.22/x
  3. Step 3: Cross multiply
    79,171.99x = 109,251.66 × 43,356.22
  4. Step 4: Simplify right side
    79,171.99x = 4,736,739,006.33
  5. Step 5: Solve for x
    x = 4,736,739,006.33/79,171.99
  6. Step 6: Final answer
    x = 59,828.47

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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.