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Finding the Fourth Proportional to 94,940.16, 131,020.92 and 61,406.16

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Solution

The fourth proportional to 94,940.16, 131,020.92 and 61,406.16 is: 84,742.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,940.16 : 131,020.92 = 61,406.16 : x
  2. Step 2: Convert to fraction form
    94,940.16/131,020.92 = 61,406.16/x
  3. Step 3: Cross multiply
    94,940.16x = 131,020.92 × 61,406.16
  4. Step 4: Simplify right side
    94,940.16x = 8,045,491,576.87
  5. Step 5: Solve for x
    x = 8,045,491,576.87/94,940.16
  6. Step 6: Final answer
    x = 84,742.76

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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.