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Finding the Fourth Proportional to 63,978.30, 95,310.83 and 61,099.67

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Solution

The fourth proportional to 63,978.30, 95,310.83 and 61,099.67 is: 91,022.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,978.30 : 95,310.83 = 61,099.67 : x
  2. Step 2: Convert to fraction form
    63,978.30/95,310.83 = 61,099.67/x
  3. Step 3: Cross multiply
    63,978.30x = 95,310.83 × 61,099.67
  4. Step 4: Simplify right side
    63,978.30x = 5,823,460,651.45
  5. Step 5: Solve for x
    x = 5,823,460,651.45/63,978.30
  6. Step 6: Final answer
    x = 91,022.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.