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Finding the Fourth Proportional to 111,259.20, 166,888.80 and 106,593.60

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Solution

The fourth proportional to 111,259.20, 166,888.80 and 106,593.60 is: 159,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,259.20 : 166,888.80 = 106,593.60 : x
  2. Step 2: Convert to fraction form
    111,259.20/166,888.80 = 106,593.60/x
  3. Step 3: Cross multiply
    111,259.20x = 166,888.80 × 106,593.60
  4. Step 4: Simplify right side
    111,259.20x = 17,789,277,991.68
  5. Step 5: Solve for x
    x = 17,789,277,991.68/111,259.20
  6. Step 6: Final answer
    x = 159,890.40

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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.