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Finding the Fourth Proportional to 73,161.36, 100,957.46 and 42,531.48

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Solution

The fourth proportional to 73,161.36, 100,957.46 and 42,531.48 is: 58,690.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,161.36 : 100,957.46 = 42,531.48 : x
  2. Step 2: Convert to fraction form
    73,161.36/100,957.46 = 42,531.48/x
  3. Step 3: Cross multiply
    73,161.36x = 100,957.46 × 42,531.48
  4. Step 4: Simplify right side
    73,161.36x = 4,293,869,978.18
  5. Step 5: Solve for x
    x = 4,293,869,978.18/73,161.36
  6. Step 6: Final answer
    x = 58,690.41

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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.