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Finding the Fourth Proportional to 17,805.66, 26,700.08 and 5,321.33

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Solution

The fourth proportional to 17,805.66, 26,700.08 and 5,321.33 is: 7,979.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,805.66 : 26,700.08 = 5,321.33 : x
  2. Step 2: Convert to fraction form
    17,805.66/26,700.08 = 5,321.33/x
  3. Step 3: Cross multiply
    17,805.66x = 26,700.08 × 5,321.33
  4. Step 4: Simplify right side
    17,805.66x = 142,079,776.60
  5. Step 5: Solve for x
    x = 142,079,776.60/17,805.66
  6. Step 6: Final answer
    x = 7,979.47

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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.