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Finding the Fourth Proportional to 19,794.76, 29,691.84 and 7,951.57

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Solution

The fourth proportional to 19,794.76, 29,691.84 and 7,951.57 is: 11,927.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,794.76 : 29,691.84 = 7,951.57 : x
  2. Step 2: Convert to fraction form
    19,794.76/29,691.84 = 7,951.57/x
  3. Step 3: Cross multiply
    19,794.76x = 29,691.84 × 7,951.57
  4. Step 4: Simplify right side
    19,794.76x = 236,096,744.19
  5. Step 5: Solve for x
    x = 236,096,744.19/19,794.76
  6. Step 6: Final answer
    x = 11,927.23

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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.