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Finding the Fourth Proportional to 19,699.43, 29,552.78 and 6,375.94

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Solution

The fourth proportional to 19,699.43, 29,552.78 and 6,375.94 is: 9,565.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.43 : 29,552.78 = 6,375.94 : x
  2. Step 2: Convert to fraction form
    19,699.43/29,552.78 = 6,375.94/x
  3. Step 3: Cross multiply
    19,699.43x = 29,552.78 × 6,375.94
  4. Step 4: Simplify right side
    19,699.43x = 188,426,694.17
  5. Step 5: Solve for x
    x = 188,426,694.17/19,699.43
  6. Step 6: Final answer
    x = 9,565.09

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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.