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Finding the Fourth Proportional to 73,087.44, 100,843.56 and 42,871.20

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Solution

The fourth proportional to 73,087.44, 100,843.56 and 42,871.20 is: 59,152.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,087.44 : 100,843.56 = 42,871.20 : x
  2. Step 2: Convert to fraction form
    73,087.44/100,843.56 = 42,871.20/x
  3. Step 3: Cross multiply
    73,087.44x = 100,843.56 × 42,871.20
  4. Step 4: Simplify right side
    73,087.44x = 4,323,284,429.47
  5. Step 5: Solve for x
    x = 4,323,284,429.47/73,087.44
  6. Step 6: Final answer
    x = 59,152.22

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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.