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Finding the Fourth Proportional to 17,321.22, 25,970.99 and 7,320.80

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Solution

The fourth proportional to 17,321.22, 25,970.99 and 7,320.80 is: 10,976.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,321.22 : 25,970.99 = 7,320.80 : x
  2. Step 2: Convert to fraction form
    17,321.22/25,970.99 = 7,320.80/x
  3. Step 3: Cross multiply
    17,321.22x = 25,970.99 × 7,320.80
  4. Step 4: Simplify right side
    17,321.22x = 190,128,257.13
  5. Step 5: Solve for x
    x = 190,128,257.13/17,321.22
  6. Step 6: Final answer
    x = 10,976.61

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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.