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Finding the Fourth Proportional to 67,121.68, 100,675.58 and 22,747.28

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Solution

The fourth proportional to 67,121.68, 100,675.58 and 22,747.28 is: 34,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,121.68 : 100,675.58 = 22,747.28 : x
  2. Step 2: Convert to fraction form
    67,121.68/100,675.58 = 22,747.28/x
  3. Step 3: Cross multiply
    67,121.68x = 100,675.58 × 22,747.28
  4. Step 4: Simplify right side
    67,121.68x = 2,290,095,607.42
  5. Step 5: Solve for x
    x = 2,290,095,607.42/67,121.68
  6. Step 6: Final answer
    x = 34,118.57

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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.