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Finding the Fourth Proportional to 196,568.68, 294,768.78 and 91,376.68

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Solution

The fourth proportional to 196,568.68, 294,768.78 and 91,376.68 is: 137,025.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,568.68 : 294,768.78 = 91,376.68 : x
  2. Step 2: Convert to fraction form
    196,568.68/294,768.78 = 91,376.68/x
  3. Step 3: Cross multiply
    196,568.68x = 294,768.78 × 91,376.68
  4. Step 4: Simplify right side
    196,568.68x = 26,934,992,484.05
  5. Step 5: Solve for x
    x = 26,934,992,484.05/196,568.68
  6. Step 6: Final answer
    x = 137,025.86

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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.