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Finding the Fourth Proportional to 91,251.36, 137,053.44 and 75,673.44

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Solution

The fourth proportional to 91,251.36, 137,053.44 and 75,673.44 is: 113,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,251.36 : 137,053.44 = 75,673.44 : x
  2. Step 2: Convert to fraction form
    91,251.36/137,053.44 = 75,673.44/x
  3. Step 3: Cross multiply
    91,251.36x = 137,053.44 × 75,673.44
  4. Step 4: Simplify right side
    91,251.36x = 10,371,305,268.63
  5. Step 5: Solve for x
    x = 10,371,305,268.63/91,251.36
  6. Step 6: Final answer
    x = 113,656.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.