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Finding the Fourth Proportional to 79,616.65, 109,868.25 and 43,806.37

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Solution

The fourth proportional to 79,616.65, 109,868.25 and 43,806.37 is: 60,451.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,616.65 : 109,868.25 = 43,806.37 : x
  2. Step 2: Convert to fraction form
    79,616.65/109,868.25 = 43,806.37/x
  3. Step 3: Cross multiply
    79,616.65x = 109,868.25 × 43,806.37
  4. Step 4: Simplify right side
    79,616.65x = 4,812,929,210.75
  5. Step 5: Solve for x
    x = 4,812,929,210.75/79,616.65
  6. Step 6: Final answer
    x = 60,451.29

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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.