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Finding the Fourth Proportional to 64,866.88, 89,512.42 and 37,640.86

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Solution

The fourth proportional to 64,866.88, 89,512.42 and 37,640.86 is: 51,942.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,866.88 : 89,512.42 = 37,640.86 : x
  2. Step 2: Convert to fraction form
    64,866.88/89,512.42 = 37,640.86/x
  3. Step 3: Cross multiply
    64,866.88x = 89,512.42 × 37,640.86
  4. Step 4: Simplify right side
    64,866.88x = 3,369,324,469.48
  5. Step 5: Solve for x
    x = 3,369,324,469.48/64,866.88
  6. Step 6: Final answer
    x = 51,942.14

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1.5x scale

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.