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Finding the Fourth Proportional to 16,982.35, 25,474.11 and 7,128.55

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Solution

The fourth proportional to 16,982.35, 25,474.11 and 7,128.55 is: 10,693.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,982.35 : 25,474.11 = 7,128.55 : x
  2. Step 2: Convert to fraction form
    16,982.35/25,474.11 = 7,128.55/x
  3. Step 3: Cross multiply
    16,982.35x = 25,474.11 × 7,128.55
  4. Step 4: Simplify right side
    16,982.35x = 181,593,504.36
  5. Step 5: Solve for x
    x = 181,593,504.36/16,982.35
  6. Step 6: Final answer
    x = 10,693.07

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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.