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Finding the Fourth Proportional to 111,169.86, 166,560.66 and 92,569.56

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Solution

The fourth proportional to 111,169.86, 166,560.66 and 92,569.56 is: 138,692.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,169.86 : 166,560.66 = 92,569.56 : x
  2. Step 2: Convert to fraction form
    111,169.86/166,560.66 = 92,569.56/x
  3. Step 3: Cross multiply
    111,169.86x = 166,560.66 × 92,569.56
  4. Step 4: Simplify right side
    111,169.86x = 15,418,447,009.51
  5. Step 5: Solve for x
    x = 15,418,447,009.51/111,169.86
  6. Step 6: Final answer
    x = 138,692.69

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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.