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Finding the Fourth Proportional to 61,209.87, 91,815.21 and 16,841.31

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Solution

The fourth proportional to 61,209.87, 91,815.21 and 16,841.31 is: 25,262.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,209.87 : 91,815.21 = 16,841.31 : x
  2. Step 2: Convert to fraction form
    61,209.87/91,815.21 = 16,841.31/x
  3. Step 3: Cross multiply
    61,209.87x = 91,815.21 × 16,841.31
  4. Step 4: Simplify right side
    61,209.87x = 1,546,288,414.33
  5. Step 5: Solve for x
    x = 1,546,288,414.33/61,209.87
  6. Step 6: Final answer
    x = 25,262.08

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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.