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Finding the Fourth Proportional to 68,764.80, 103,147.20 and 22,022.40

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Solution

The fourth proportional to 68,764.80, 103,147.20 and 22,022.40 is: 33,033.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,764.80 : 103,147.20 = 22,022.40 : x
  2. Step 2: Convert to fraction form
    68,764.80/103,147.20 = 22,022.40/x
  3. Step 3: Cross multiply
    68,764.80x = 103,147.20 × 22,022.40
  4. Step 4: Simplify right side
    68,764.80x = 2,271,548,897.28
  5. Step 5: Solve for x
    x = 2,271,548,897.28/68,764.80
  6. Step 6: Final answer
    x = 33,033.60

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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.