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Finding the Fourth Proportional to 39,696.96, 54,786.17 and 22,702.79

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Solution

The fourth proportional to 39,696.96, 54,786.17 and 22,702.79 is: 31,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,696.96 : 54,786.17 = 22,702.79 : x
  2. Step 2: Convert to fraction form
    39,696.96/54,786.17 = 22,702.79/x
  3. Step 3: Cross multiply
    39,696.96x = 54,786.17 × 22,702.79
  4. Step 4: Simplify right side
    39,696.96x = 1,243,798,524.97
  5. Step 5: Solve for x
    x = 1,243,798,524.97/39,696.96
  6. Step 6: Final answer
    x = 31,332.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.