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Finding the Fourth Proportional to 118,892.20, 164,070.48 and 65,180.56

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Solution

The fourth proportional to 118,892.20, 164,070.48 and 65,180.56 is: 89,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,892.20 : 164,070.48 = 65,180.56 : x
  2. Step 2: Convert to fraction form
    118,892.20/164,070.48 = 65,180.56/x
  3. Step 3: Cross multiply
    118,892.20x = 164,070.48 × 65,180.56
  4. Step 4: Simplify right side
    118,892.20x = 10,694,205,765.87
  5. Step 5: Solve for x
    x = 10,694,205,765.87/118,892.20
  6. Step 6: Final answer
    x = 89,948.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.