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Finding the Fourth Proportional to 67,644.62, 101,466.90 and 42,722.54

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Solution

The fourth proportional to 67,644.62, 101,466.90 and 42,722.54 is: 64,083.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,644.62 : 101,466.90 = 42,722.54 : x
  2. Step 2: Convert to fraction form
    67,644.62/101,466.90 = 42,722.54/x
  3. Step 3: Cross multiply
    67,644.62x = 101,466.90 × 42,722.54
  4. Step 4: Simplify right side
    67,644.62x = 4,334,923,186.59
  5. Step 5: Solve for x
    x = 4,334,923,186.59/67,644.62
  6. Step 6: Final answer
    x = 64,083.79

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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.