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Finding the Fourth Proportional to 110,488.60, 165,732.90 and 68,498.20

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Solution

The fourth proportional to 110,488.60, 165,732.90 and 68,498.20 is: 102,747.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,488.60 : 165,732.90 = 68,498.20 : x
  2. Step 2: Convert to fraction form
    110,488.60/165,732.90 = 68,498.20/x
  3. Step 3: Cross multiply
    110,488.60x = 165,732.90 × 68,498.20
  4. Step 4: Simplify right side
    110,488.60x = 11,352,405,330.78
  5. Step 5: Solve for x
    x = 11,352,405,330.78/110,488.60
  6. Step 6: Final answer
    x = 102,747.30

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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.