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Finding the Fourth Proportional to 59,394.20, 89,028.90 and 21,930.39

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Solution

The fourth proportional to 59,394.20, 89,028.90 and 21,930.39 is: 32,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,394.20 : 89,028.90 = 21,930.39 : x
  2. Step 2: Convert to fraction form
    59,394.20/89,028.90 = 21,930.39/x
  3. Step 3: Cross multiply
    59,394.20x = 89,028.90 × 21,930.39
  4. Step 4: Simplify right side
    59,394.20x = 1,952,438,498.27
  5. Step 5: Solve for x
    x = 1,952,438,498.27/59,394.20
  6. Step 6: Final answer
    x = 32,872.55

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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.