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Finding the Fourth Proportional to 243,086.72, 364,691.67 and 74,615.58

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Solution

The fourth proportional to 243,086.72, 364,691.67 and 74,615.58 is: 111,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,086.72 : 364,691.67 = 74,615.58 : x
  2. Step 2: Convert to fraction form
    243,086.72/364,691.67 = 74,615.58/x
  3. Step 3: Cross multiply
    243,086.72x = 364,691.67 × 74,615.58
  4. Step 4: Simplify right side
    243,086.72x = 27,211,680,198.41
  5. Step 5: Solve for x
    x = 27,211,680,198.41/243,086.72
  6. Step 6: Final answer
    x = 111,942.27

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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.