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Finding the Fourth Proportional to 65,894.58, 90,976.41 and 43,273.71

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Solution

The fourth proportional to 65,894.58, 90,976.41 and 43,273.71 is: 59,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,894.58 : 90,976.41 = 43,273.71 : x
  2. Step 2: Convert to fraction form
    65,894.58/90,976.41 = 43,273.71/x
  3. Step 3: Cross multiply
    65,894.58x = 90,976.41 × 43,273.71
  4. Step 4: Simplify right side
    65,894.58x = 3,936,886,783.18
  5. Step 5: Solve for x
    x = 3,936,886,783.18/65,894.58
  6. Step 6: Final answer
    x = 59,745.23

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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.