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Finding the Fourth Proportional to 166,720.31, 230,074.04 and 91,268.81

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Solution

The fourth proportional to 166,720.31, 230,074.04 and 91,268.81 is: 125,950.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,720.31 : 230,074.04 = 91,268.81 : x
  2. Step 2: Convert to fraction form
    166,720.31/230,074.04 = 91,268.81/x
  3. Step 3: Cross multiply
    166,720.31x = 230,074.04 × 91,268.81
  4. Step 4: Simplify right side
    166,720.31x = 20,998,584,646.05
  5. Step 5: Solve for x
    x = 20,998,584,646.05/166,720.31
  6. Step 6: Final answer
    x = 125,950.97

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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.