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Finding the Fourth Proportional to 92,728.70, 127,971.01 and 51,892.48

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Solution

The fourth proportional to 92,728.70, 127,971.01 and 51,892.48 is: 71,614.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,728.70 : 127,971.01 = 51,892.48 : x
  2. Step 2: Convert to fraction form
    92,728.70/127,971.01 = 51,892.48/x
  3. Step 3: Cross multiply
    92,728.70x = 127,971.01 × 51,892.48
  4. Step 4: Simplify right side
    92,728.70x = 6,640,733,279.88
  5. Step 5: Solve for x
    x = 6,640,733,279.88/92,728.70
  6. Step 6: Final answer
    x = 71,614.65

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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.