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Finding the Fourth Proportional to 79,310.05, 109,454.89 and 43,507.04

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Solution

The fourth proportional to 79,310.05, 109,454.89 and 43,507.04 is: 60,043.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,310.05 : 109,454.89 = 43,507.04 : x
  2. Step 2: Convert to fraction form
    79,310.05/109,454.89 = 43,507.04/x
  3. Step 3: Cross multiply
    79,310.05x = 109,454.89 × 43,507.04
  4. Step 4: Simplify right side
    79,310.05x = 4,762,057,621.38
  5. Step 5: Solve for x
    x = 4,762,057,621.38/79,310.05
  6. Step 6: Final answer
    x = 60,043.56

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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.