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Finding the Fourth Proportional to 92,286.90, 127,081.16 and 85,588.66

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Solution

The fourth proportional to 92,286.90, 127,081.16 and 85,588.66 is: 117,857.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,286.90 : 127,081.16 = 85,588.66 : x
  2. Step 2: Convert to fraction form
    92,286.90/127,081.16 = 85,588.66/x
  3. Step 3: Cross multiply
    92,286.90x = 127,081.16 × 85,588.66
  4. Step 4: Simplify right side
    92,286.90x = 10,876,706,195.65
  5. Step 5: Solve for x
    x = 10,876,706,195.65/92,286.90
  6. Step 6: Final answer
    x = 117,857.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.