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Finding the Fourth Proportional to 79,529.70, 109,752.12 and 43,723.02

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Solution

The fourth proportional to 79,529.70, 109,752.12 and 43,723.02 is: 60,338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,529.70 : 109,752.12 = 43,723.02 : x
  2. Step 2: Convert to fraction form
    79,529.70/109,752.12 = 43,723.02/x
  3. Step 3: Cross multiply
    79,529.70x = 109,752.12 × 43,723.02
  4. Step 4: Simplify right side
    79,529.70x = 4,798,694,137.80
  5. Step 5: Solve for x
    x = 4,798,694,137.80/79,529.70
  6. Step 6: Final answer
    x = 60,338.39

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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.