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Finding the Fourth Proportional to 111,918.68, 167,934.30 and 69,787.88

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Solution

The fourth proportional to 111,918.68, 167,934.30 and 69,787.88 is: 104,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,918.68 : 167,934.30 = 69,787.88 : x
  2. Step 2: Convert to fraction form
    111,918.68/167,934.30 = 69,787.88/x
  3. Step 3: Cross multiply
    111,918.68x = 167,934.30 × 69,787.88
  4. Step 4: Simplify right side
    111,918.68x = 11,719,778,776.28
  5. Step 5: Solve for x
    x = 11,719,778,776.28/111,918.68
  6. Step 6: Final answer
    x = 104,716.91

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.