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Finding the Fourth Proportional to 57,364.97, 86,034.45 and 21,813.61

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Solution

The fourth proportional to 57,364.97, 86,034.45 and 21,813.61 is: 32,715.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,364.97 : 86,034.45 = 21,813.61 : x
  2. Step 2: Convert to fraction form
    57,364.97/86,034.45 = 21,813.61/x
  3. Step 3: Cross multiply
    57,364.97x = 86,034.45 × 21,813.61
  4. Step 4: Simplify right side
    57,364.97x = 1,876,722,128.21
  5. Step 5: Solve for x
    x = 1,876,722,128.21/57,364.97
  6. Step 6: Final answer
    x = 32,715.48

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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.