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Finding the Fourth Proportional to 167,399.68, 231,009.40 and 91,943.32

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Solution

The fourth proportional to 167,399.68, 231,009.40 and 91,943.32 is: 126,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,399.68 : 231,009.40 = 91,943.32 : x
  2. Step 2: Convert to fraction form
    167,399.68/231,009.40 = 91,943.32/x
  3. Step 3: Cross multiply
    167,399.68x = 231,009.40 × 91,943.32
  4. Step 4: Simplify right side
    167,399.68x = 21,239,771,187.21
  5. Step 5: Solve for x
    x = 21,239,771,187.21/167,399.68
  6. Step 6: Final answer
    x = 126,880.60

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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.