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Finding the Fourth Proportional to 67,644.11, 101,481.95 and 19,613.72

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Solution

The fourth proportional to 67,644.11, 101,481.95 and 19,613.72 is: 29,425.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,644.11 : 101,481.95 = 19,613.72 : x
  2. Step 2: Convert to fraction form
    67,644.11/101,481.95 = 19,613.72/x
  3. Step 3: Cross multiply
    67,644.11x = 101,481.95 × 19,613.72
  4. Step 4: Simplify right side
    67,644.11x = 1,990,438,552.35
  5. Step 5: Solve for x
    x = 1,990,438,552.35/67,644.11
  6. Step 6: Final answer
    x = 29,425.16

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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.