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Finding the Fourth Proportional to 68,866.80, 103,213.80 and 33,730.80

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Solution

The fourth proportional to 68,866.80, 103,213.80 and 33,730.80 is: 50,553.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,866.80 : 103,213.80 = 33,730.80 : x
  2. Step 2: Convert to fraction form
    68,866.80/103,213.80 = 33,730.80/x
  3. Step 3: Cross multiply
    68,866.80x = 103,213.80 × 33,730.80
  4. Step 4: Simplify right side
    68,866.80x = 3,481,484,045.04
  5. Step 5: Solve for x
    x = 3,481,484,045.04/68,866.80
  6. Step 6: Final answer
    x = 50,553.88

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1.5x scale

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.