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Finding the Fourth Proportional to 71,716.52, 107,574.78 and 21,797.04

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Solution

The fourth proportional to 71,716.52, 107,574.78 and 21,797.04 is: 32,695.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,716.52 : 107,574.78 = 21,797.04 : x
  2. Step 2: Convert to fraction form
    71,716.52/107,574.78 = 21,797.04/x
  3. Step 3: Cross multiply
    71,716.52x = 107,574.78 × 21,797.04
  4. Step 4: Simplify right side
    71,716.52x = 2,344,811,782.65
  5. Step 5: Solve for x
    x = 2,344,811,782.65/71,716.52
  6. Step 6: Final answer
    x = 32,695.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.