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Finding the Fourth Proportional to 17,321.70, 25,980.32 and 5,476.68

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Solution

The fourth proportional to 17,321.70, 25,980.32 and 5,476.68 is: 8,214.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,321.70 : 25,980.32 = 5,476.68 : x
  2. Step 2: Convert to fraction form
    17,321.70/25,980.32 = 5,476.68/x
  3. Step 3: Cross multiply
    17,321.70x = 25,980.32 × 5,476.68
  4. Step 4: Simplify right side
    17,321.70x = 142,285,769.04
  5. Step 5: Solve for x
    x = 142,285,769.04/17,321.70
  6. Step 6: Final answer
    x = 8,214.31

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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.