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Finding the Fourth Proportional to 11,662.80, 17,480.65 and 6,668.68

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Solution

The fourth proportional to 11,662.80, 17,480.65 and 6,668.68 is: 9,995.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,662.80 : 17,480.65 = 6,668.68 : x
  2. Step 2: Convert to fraction form
    11,662.80/17,480.65 = 6,668.68/x
  3. Step 3: Cross multiply
    11,662.80x = 17,480.65 × 6,668.68
  4. Step 4: Simplify right side
    11,662.80x = 116,572,800.67
  5. Step 5: Solve for x
    x = 116,572,800.67/11,662.80
  6. Step 6: Final answer
    x = 9,995.27

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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.