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Finding the Fourth Proportional to 92,512.85, 138,623.92 and 71,504.33

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Solution

The fourth proportional to 92,512.85, 138,623.92 and 71,504.33 is: 107,144.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,512.85 : 138,623.92 = 71,504.33 : x
  2. Step 2: Convert to fraction form
    92,512.85/138,623.92 = 71,504.33/x
  3. Step 3: Cross multiply
    92,512.85x = 138,623.92 × 71,504.33
  4. Step 4: Simplify right side
    92,512.85x = 9,912,209,649.69
  5. Step 5: Solve for x
    x = 9,912,209,649.69/92,512.85
  6. Step 6: Final answer
    x = 107,144.14

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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.