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Finding the Fourth Proportional to 79,551.49, 109,781.46 and 43,743.82

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Solution

The fourth proportional to 79,551.49, 109,781.46 and 43,743.82 is: 60,366.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,551.49 : 109,781.46 = 43,743.82 : x
  2. Step 2: Convert to fraction form
    79,551.49/109,781.46 = 43,743.82/x
  3. Step 3: Cross multiply
    79,551.49x = 109,781.46 × 43,743.82
  4. Step 4: Simplify right side
    79,551.49x = 4,802,259,657.95
  5. Step 5: Solve for x
    x = 4,802,259,657.95/79,551.49
  6. Step 6: Final answer
    x = 60,366.69

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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.