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Finding the Fourth Proportional to 378,516.44, 567,687.18 and 112,212.74

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Solution

The fourth proportional to 378,516.44, 567,687.18 and 112,212.74 is: 168,293.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,516.44 : 567,687.18 = 112,212.74 : x
  2. Step 2: Convert to fraction form
    378,516.44/567,687.18 = 112,212.74/x
  3. Step 3: Cross multiply
    378,516.44x = 567,687.18 × 112,212.74
  4. Step 4: Simplify right side
    378,516.44x = 63,701,733,930.67
  5. Step 5: Solve for x
    x = 63,701,733,930.67/378,516.44
  6. Step 6: Final answer
    x = 168,293.18

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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.