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Finding the Fourth Proportional to 110,628.15, 165,845.03 and 66,272.55

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Solution

The fourth proportional to 110,628.15, 165,845.03 and 66,272.55 is: 99,350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,628.15 : 165,845.03 = 66,272.55 : x
  2. Step 2: Convert to fraction form
    110,628.15/165,845.03 = 66,272.55/x
  3. Step 3: Cross multiply
    110,628.15x = 165,845.03 × 66,272.55
  4. Step 4: Simplify right side
    110,628.15x = 10,990,972,711.56
  5. Step 5: Solve for x
    x = 10,990,972,711.56/110,628.15
  6. Step 6: Final answer
    x = 99,350.60

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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.