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Finding the Fourth Proportional to 79,551.47, 109,781.01 and 43,743.80

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Solution

The fourth proportional to 79,551.47, 109,781.01 and 43,743.80 is: 60,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,551.47 : 109,781.01 = 43,743.80 : x
  2. Step 2: Convert to fraction form
    79,551.47/109,781.01 = 43,743.80/x
  3. Step 3: Cross multiply
    79,551.47x = 109,781.01 × 43,743.80
  4. Step 4: Simplify right side
    79,551.47x = 4,802,238,545.24
  5. Step 5: Solve for x
    x = 4,802,238,545.24/79,551.47
  6. Step 6: Final answer
    x = 60,366.43

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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.