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Finding the Fourth Proportional to 111,892.40, 167,930.40 and 111,017.60

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Solution

The fourth proportional to 111,892.40, 167,930.40 and 111,017.60 is: 166,617.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,892.40 : 167,930.40 = 111,017.60 : x
  2. Step 2: Convert to fraction form
    111,892.40/167,930.40 = 111,017.60/x
  3. Step 3: Cross multiply
    111,892.40x = 167,930.40 × 111,017.60
  4. Step 4: Simplify right side
    111,892.40x = 18,643,229,975.04
  5. Step 5: Solve for x
    x = 18,643,229,975.04/111,892.40
  6. Step 6: Final answer
    x = 166,617.48

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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.