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Finding the Fourth Proportional to 61,662.25, 92,493.38 and 20,109.25

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Solution

The fourth proportional to 61,662.25, 92,493.38 and 20,109.25 is: 30,163.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,662.25 : 92,493.38 = 20,109.25 : x
  2. Step 2: Convert to fraction form
    61,662.25/92,493.38 = 20,109.25/x
  3. Step 3: Cross multiply
    61,662.25x = 92,493.38 × 20,109.25
  4. Step 4: Simplify right side
    61,662.25x = 1,859,972,501.77
  5. Step 5: Solve for x
    x = 1,859,972,501.77/61,662.25
  6. Step 6: Final answer
    x = 30,163.88

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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.