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Finding the Fourth Proportional to 68,668.80, 102,932.18 and 39,022.80

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Solution

The fourth proportional to 68,668.80, 102,932.18 and 39,022.80 is: 58,493.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,668.80 : 102,932.18 = 39,022.80 : x
  2. Step 2: Convert to fraction form
    68,668.80/102,932.18 = 39,022.80/x
  3. Step 3: Cross multiply
    68,668.80x = 102,932.18 × 39,022.80
  4. Step 4: Simplify right side
    68,668.80x = 4,016,701,873.70
  5. Step 5: Solve for x
    x = 4,016,701,873.70/68,668.80
  6. Step 6: Final answer
    x = 58,493.84

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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.