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Finding the Fourth Proportional to 64,745.88, 97,093.32 and 31,456.10

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Solution

The fourth proportional to 64,745.88, 97,093.32 and 31,456.10 is: 47,171.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,745.88 : 97,093.32 = 31,456.10 : x
  2. Step 2: Convert to fraction form
    64,745.88/97,093.32 = 31,456.10/x
  3. Step 3: Cross multiply
    64,745.88x = 97,093.32 × 31,456.10
  4. Step 4: Simplify right side
    64,745.88x = 3,054,177,183.25
  5. Step 5: Solve for x
    x = 3,054,177,183.25/64,745.88
  6. Step 6: Final answer
    x = 47,171.76

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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.