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Finding the Fourth Proportional to 33,308.80, 49,948.62 and 9,930.58

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Solution

The fourth proportional to 33,308.80, 49,948.62 and 9,930.58 is: 14,891.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,308.80 : 49,948.62 = 9,930.58 : x
  2. Step 2: Convert to fraction form
    33,308.80/49,948.62 = 9,930.58/x
  3. Step 3: Cross multiply
    33,308.80x = 49,948.62 × 9,930.58
  4. Step 4: Simplify right side
    33,308.80x = 496,018,766.80
  5. Step 5: Solve for x
    x = 496,018,766.80/33,308.80
  6. Step 6: Final answer
    x = 14,891.52

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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.