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Finding the Fourth Proportional to 111,244.20, 166,866.30 and 106,578.60

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Solution

The fourth proportional to 111,244.20, 166,866.30 and 106,578.60 is: 159,867.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,244.20 : 166,866.30 = 106,578.60 : x
  2. Step 2: Convert to fraction form
    111,244.20/166,866.30 = 106,578.60/x
  3. Step 3: Cross multiply
    111,244.20x = 166,866.30 × 106,578.60
  4. Step 4: Simplify right side
    111,244.20x = 17,784,376,641.18
  5. Step 5: Solve for x
    x = 17,784,376,641.18/111,244.20
  6. Step 6: Final answer
    x = 159,867.90

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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.