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Finding the Fourth Proportional to 65,768.64, 90,760.60 and 35,553.97

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Solution

The fourth proportional to 65,768.64, 90,760.60 and 35,553.97 is: 49,064.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,768.64 : 90,760.60 = 35,553.97 : x
  2. Step 2: Convert to fraction form
    65,768.64/90,760.60 = 35,553.97/x
  3. Step 3: Cross multiply
    65,768.64x = 90,760.60 × 35,553.97
  4. Step 4: Simplify right side
    65,768.64x = 3,226,899,807.48
  5. Step 5: Solve for x
    x = 3,226,899,807.48/65,768.64
  6. Step 6: Final answer
    x = 49,064.41

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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.