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Finding the Fourth Proportional to 61,086.68, 91,625.70 and 18,965.73

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Solution

The fourth proportional to 61,086.68, 91,625.70 and 18,965.73 is: 28,447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,086.68 : 91,625.70 = 18,965.73 : x
  2. Step 2: Convert to fraction form
    61,086.68/91,625.70 = 18,965.73/x
  3. Step 3: Cross multiply
    61,086.68x = 91,625.70 × 18,965.73
  4. Step 4: Simplify right side
    61,086.68x = 1,737,748,287.26
  5. Step 5: Solve for x
    x = 1,737,748,287.26/61,086.68
  6. Step 6: Final answer
    x = 28,447.25

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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.