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Finding the Fourth Proportional to 79,574.97, 109,815.78 and 43,767.30

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Solution

The fourth proportional to 79,574.97, 109,815.78 and 43,767.30 is: 60,400.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,574.97 : 109,815.78 = 43,767.30 : x
  2. Step 2: Convert to fraction form
    79,574.97/109,815.78 = 43,767.30/x
  3. Step 3: Cross multiply
    79,574.97x = 109,815.78 × 43,767.30
  4. Step 4: Simplify right side
    79,574.97x = 4,806,340,763.93
  5. Step 5: Solve for x
    x = 4,806,340,763.93/79,574.97
  6. Step 6: Final answer
    x = 60,400.16

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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.