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Finding the Fourth Proportional to 135,322.36, 186,747.60 and 74,891.48

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Solution

The fourth proportional to 135,322.36, 186,747.60 and 74,891.48 is: 103,351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,322.36 : 186,747.60 = 74,891.48 : x
  2. Step 2: Convert to fraction form
    135,322.36/186,747.60 = 74,891.48/x
  3. Step 3: Cross multiply
    135,322.36x = 186,747.60 × 74,891.48
  4. Step 4: Simplify right side
    135,322.36x = 13,985,804,150.45
  5. Step 5: Solve for x
    x = 13,985,804,150.45/135,322.36
  6. Step 6: Final answer
    x = 103,351.76

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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.