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Finding the Fourth Proportional to 21,993.48, 32,983.26 and 7,951.62

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Solution

The fourth proportional to 21,993.48, 32,983.26 and 7,951.62 is: 11,924.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.48 : 32,983.26 = 7,951.62 : x
  2. Step 2: Convert to fraction form
    21,993.48/32,983.26 = 7,951.62/x
  3. Step 3: Cross multiply
    21,993.48x = 32,983.26 × 7,951.62
  4. Step 4: Simplify right side
    21,993.48x = 262,270,349.88
  5. Step 5: Solve for x
    x = 262,270,349.88/21,993.48
  6. Step 6: Final answer
    x = 11,924.91

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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.