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Finding the Fourth Proportional to 132,064.80, 197,793.45 and 108,445.20

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Solution

The fourth proportional to 132,064.80, 197,793.45 and 108,445.20 is: 162,418.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,064.80 : 197,793.45 = 108,445.20 : x
  2. Step 2: Convert to fraction form
    132,064.80/197,793.45 = 108,445.20/x
  3. Step 3: Cross multiply
    132,064.80x = 197,793.45 × 108,445.20
  4. Step 4: Simplify right side
    132,064.80x = 21,449,750,243.94
  5. Step 5: Solve for x
    x = 21,449,750,243.94/132,064.80
  6. Step 6: Final answer
    x = 162,418.38

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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.