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Finding the Fourth Proportional to 116,972.73, 161,415.86 and 65,993.76

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Solution

The fourth proportional to 116,972.73, 161,415.86 and 65,993.76 is: 91,067.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,972.73 : 161,415.86 = 65,993.76 : x
  2. Step 2: Convert to fraction form
    116,972.73/161,415.86 = 65,993.76/x
  3. Step 3: Cross multiply
    116,972.73x = 161,415.86 × 65,993.76
  4. Step 4: Simplify right side
    116,972.73x = 10,652,439,195.06
  5. Step 5: Solve for x
    x = 10,652,439,195.06/116,972.73
  6. Step 6: Final answer
    x = 91,067.71

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1.5x scale

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.