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Finding the Fourth Proportional to 21,679.92, 32,522.04 and 9,996.48

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Solution

The fourth proportional to 21,679.92, 32,522.04 and 9,996.48 is: 14,995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.92 : 32,522.04 = 9,996.48 : x
  2. Step 2: Convert to fraction form
    21,679.92/32,522.04 = 9,996.48/x
  3. Step 3: Cross multiply
    21,679.92x = 32,522.04 × 9,996.48
  4. Step 4: Simplify right side
    21,679.92x = 325,105,922.42
  5. Step 5: Solve for x
    x = 325,105,922.42/21,679.92
  6. Step 6: Final answer
    x = 14,995.72

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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.