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Finding the Fourth Proportional to 663,761.55, 995,635.85 and 190,449.39

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Solution

The fourth proportional to 663,761.55, 995,635.85 and 190,449.39 is: 285,672.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,761.55 : 995,635.85 = 190,449.39 : x
  2. Step 2: Convert to fraction form
    663,761.55/995,635.85 = 190,449.39/x
  3. Step 3: Cross multiply
    663,761.55x = 995,635.85 × 190,449.39
  4. Step 4: Simplify right side
    663,761.55x = 189,618,239,342.39
  5. Step 5: Solve for x
    x = 189,618,239,342.39/663,761.55
  6. Step 6: Final answer
    x = 285,672.23

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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.