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Finding the Fourth Proportional to 92,706.44, 138,796.97 and 61,021.22

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Solution

The fourth proportional to 92,706.44, 138,796.97 and 61,021.22 is: 91,358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,706.44 : 138,796.97 = 61,021.22 : x
  2. Step 2: Convert to fraction form
    92,706.44/138,796.97 = 61,021.22/x
  3. Step 3: Cross multiply
    92,706.44x = 138,796.97 × 61,021.22
  4. Step 4: Simplify right side
    92,706.44x = 8,469,559,442.61
  5. Step 5: Solve for x
    x = 8,469,559,442.61/92,706.44
  6. Step 6: Final answer
    x = 91,358.92

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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.