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Finding the Fourth Proportional to 60,571.40, 90,772.04 and 51,640.54

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Solution

The fourth proportional to 60,571.40, 90,772.04 and 51,640.54 is: 77,388.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,571.40 : 90,772.04 = 51,640.54 : x
  2. Step 2: Convert to fraction form
    60,571.40/90,772.04 = 51,640.54/x
  3. Step 3: Cross multiply
    60,571.40x = 90,772.04 × 51,640.54
  4. Step 4: Simplify right side
    60,571.40x = 4,687,517,064.67
  5. Step 5: Solve for x
    x = 4,687,517,064.67/60,571.40
  6. Step 6: Final answer
    x = 77,388.30

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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.