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Finding the Fourth Proportional to 9,668.70, 14,481.45 and 7,940.70

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Solution

The fourth proportional to 9,668.70, 14,481.45 and 7,940.70 is: 11,893.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,668.70 : 14,481.45 = 7,940.70 : x
  2. Step 2: Convert to fraction form
    9,668.70/14,481.45 = 7,940.70/x
  3. Step 3: Cross multiply
    9,668.70x = 14,481.45 × 7,940.70
  4. Step 4: Simplify right side
    9,668.70x = 114,992,850.02
  5. Step 5: Solve for x
    x = 114,992,850.02/9,668.70
  6. Step 6: Final answer
    x = 11,893.31

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1.5x scale

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.