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Finding the Fourth Proportional to 68,767.69, 103,152.45 and 22,020.57

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Solution

The fourth proportional to 68,767.69, 103,152.45 and 22,020.57 is: 33,031.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,767.69 : 103,152.45 = 22,020.57 : x
  2. Step 2: Convert to fraction form
    68,767.69/103,152.45 = 22,020.57/x
  3. Step 3: Cross multiply
    68,767.69x = 103,152.45 × 22,020.57
  4. Step 4: Simplify right side
    68,767.69x = 2,271,475,745.90
  5. Step 5: Solve for x
    x = 2,271,475,745.90/68,767.69
  6. Step 6: Final answer
    x = 33,031.15

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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.