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Finding the Fourth Proportional to 60,418.70, 90,640.20 and 50,625.80

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Solution

The fourth proportional to 60,418.70, 90,640.20 and 50,625.80 is: 75,948.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,418.70 : 90,640.20 = 50,625.80 : x
  2. Step 2: Convert to fraction form
    60,418.70/90,640.20 = 50,625.80/x
  3. Step 3: Cross multiply
    60,418.70x = 90,640.20 × 50,625.80
  4. Step 4: Simplify right side
    60,418.70x = 4,588,732,637.16
  5. Step 5: Solve for x
    x = 4,588,732,637.16/60,418.70
  6. Step 6: Final answer
    x = 75,948.88

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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.