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Finding the Fourth Proportional to 71,716.65, 107,577.27 and 21,797.19

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Solution

The fourth proportional to 71,716.65, 107,577.27 and 21,797.19 is: 32,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,716.65 : 107,577.27 = 21,797.19 : x
  2. Step 2: Convert to fraction form
    71,716.65/107,577.27 = 21,797.19/x
  3. Step 3: Cross multiply
    71,716.65x = 107,577.27 × 21,797.19
  4. Step 4: Simplify right side
    71,716.65x = 2,344,882,193.87
  5. Step 5: Solve for x
    x = 2,344,882,193.87/71,716.65
  6. Step 6: Final answer
    x = 32,696.48

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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.