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Finding the Fourth Proportional to 21,996.34, 32,987.57 and 7,201.86

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Solution

The fourth proportional to 21,996.34, 32,987.57 and 7,201.86 is: 10,800.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.34 : 32,987.57 = 7,201.86 : x
  2. Step 2: Convert to fraction form
    21,996.34/32,987.57 = 7,201.86/x
  3. Step 3: Cross multiply
    21,996.34x = 32,987.57 × 7,201.86
  4. Step 4: Simplify right side
    21,996.34x = 237,571,659.93
  5. Step 5: Solve for x
    x = 237,571,659.93/21,996.34
  6. Step 6: Final answer
    x = 10,800.51

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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.