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Finding the Fourth Proportional to 196,570.68, 294,771.78 and 91,378.68

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Solution

The fourth proportional to 196,570.68, 294,771.78 and 91,378.68 is: 137,028.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,570.68 : 294,771.78 = 91,378.68 : x
  2. Step 2: Convert to fraction form
    196,570.68/294,771.78 = 91,378.68/x
  3. Step 3: Cross multiply
    196,570.68x = 294,771.78 × 91,378.68
  4. Step 4: Simplify right side
    196,570.68x = 26,935,856,157.65
  5. Step 5: Solve for x
    x = 26,935,856,157.65/196,570.68
  6. Step 6: Final answer
    x = 137,028.86

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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.