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Finding the Fourth Proportional to 116,866.15, 161,286.63 and 69,134.86

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Solution

The fourth proportional to 116,866.15, 161,286.63 and 69,134.86 is: 95,412.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,866.15 : 161,286.63 = 69,134.86 : x
  2. Step 2: Convert to fraction form
    116,866.15/161,286.63 = 69,134.86/x
  3. Step 3: Cross multiply
    116,866.15x = 161,286.63 × 69,134.86
  4. Step 4: Simplify right side
    116,866.15x = 11,150,528,584.92
  5. Step 5: Solve for x
    x = 11,150,528,584.92/116,866.15
  6. Step 6: Final answer
    x = 95,412.82

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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.