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Finding the Fourth Proportional to 57,395.15, 79,201.46 and 31,899.86

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Solution

The fourth proportional to 57,395.15, 79,201.46 and 31,899.86 is: 44,019.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,395.15 : 79,201.46 = 31,899.86 : x
  2. Step 2: Convert to fraction form
    57,395.15/79,201.46 = 31,899.86/x
  3. Step 3: Cross multiply
    57,395.15x = 79,201.46 × 31,899.86
  4. Step 4: Simplify right side
    57,395.15x = 2,526,515,466.54
  5. Step 5: Solve for x
    x = 2,526,515,466.54/57,395.15
  6. Step 6: Final answer
    x = 44,019.67

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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.