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Finding the Fourth Proportional to 61,344.21, 92,016.27 and 19,791.21

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Solution

The fourth proportional to 61,344.21, 92,016.27 and 19,791.21 is: 29,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,344.21 : 92,016.27 = 19,791.21 : x
  2. Step 2: Convert to fraction form
    61,344.21/92,016.27 = 19,791.21/x
  3. Step 3: Cross multiply
    61,344.21x = 92,016.27 × 19,791.21
  4. Step 4: Simplify right side
    61,344.21x = 1,821,113,322.99
  5. Step 5: Solve for x
    x = 1,821,113,322.99/61,344.21
  6. Step 6: Final answer
    x = 29,686.80

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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.