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Finding the Fourth Proportional to 71,694.80, 107,561.40 and 63,957.20

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Solution

The fourth proportional to 71,694.80, 107,561.40 and 63,957.20 is: 95,952.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,694.80 : 107,561.40 = 63,957.20 : x
  2. Step 2: Convert to fraction form
    71,694.80/107,561.40 = 63,957.20/x
  3. Step 3: Cross multiply
    71,694.80x = 107,561.40 × 63,957.20
  4. Step 4: Simplify right side
    71,694.80x = 6,879,325,972.08
  5. Step 5: Solve for x
    x = 6,879,325,972.08/71,694.80
  6. Step 6: Final answer
    x = 95,952.93

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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.