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Finding the Fourth Proportional to 61,646.21, 92,469.71 and 20,093.21

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Solution

The fourth proportional to 61,646.21, 92,469.71 and 20,093.21 is: 30,139.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,646.21 : 92,469.71 = 20,093.21 : x
  2. Step 2: Convert to fraction form
    61,646.21/92,469.71 = 20,093.21/x
  3. Step 3: Cross multiply
    61,646.21x = 92,469.71 × 20,093.21
  4. Step 4: Simplify right side
    61,646.21x = 1,858,012,889.55
  5. Step 5: Solve for x
    x = 1,858,012,889.55/61,646.21
  6. Step 6: Final answer
    x = 30,139.94

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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.