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Finding the Fourth Proportional to 196,699.78, 295,049.67 and 91,395.73

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Solution

The fourth proportional to 196,699.78, 295,049.67 and 91,395.73 is: 137,093.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,699.78 : 295,049.67 = 91,395.73 : x
  2. Step 2: Convert to fraction form
    196,699.78/295,049.67 = 91,395.73/x
  3. Step 3: Cross multiply
    196,699.78x = 295,049.67 × 91,395.73
  4. Step 4: Simplify right side
    196,699.78x = 26,966,279,975.91
  5. Step 5: Solve for x
    x = 26,966,279,975.91/196,699.78
  6. Step 6: Final answer
    x = 137,093.60

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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.