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Finding the Fourth Proportional to 98,127.40, 135,115.94 and 73,963.48

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Solution

The fourth proportional to 98,127.40, 135,115.94 and 73,963.48 is: 101,843.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,127.40 : 135,115.94 = 73,963.48 : x
  2. Step 2: Convert to fraction form
    98,127.40/135,115.94 = 73,963.48/x
  3. Step 3: Cross multiply
    98,127.40x = 135,115.94 × 73,963.48
  4. Step 4: Simplify right side
    98,127.40x = 9,993,645,125.87
  5. Step 5: Solve for x
    x = 9,993,645,125.87/98,127.40
  6. Step 6: Final answer
    x = 101,843.57

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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.