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Finding the Fourth Proportional to 68,574.26, 102,793.90 and 40,075.04

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Solution

The fourth proportional to 68,574.26, 102,793.90 and 40,075.04 is: 60,073.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,574.26 : 102,793.90 = 40,075.04 : x
  2. Step 2: Convert to fraction form
    68,574.26/102,793.90 = 40,075.04/x
  3. Step 3: Cross multiply
    68,574.26x = 102,793.90 × 40,075.04
  4. Step 4: Simplify right side
    68,574.26x = 4,119,469,654.26
  5. Step 5: Solve for x
    x = 4,119,469,654.26/68,574.26
  6. Step 6: Final answer
    x = 60,073.12

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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.