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Finding the Fourth Proportional to 21,472.88, 32,208.96 and 5,889.92

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Solution

The fourth proportional to 21,472.88, 32,208.96 and 5,889.92 is: 8,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.88 : 32,208.96 = 5,889.92 : x
  2. Step 2: Convert to fraction form
    21,472.88/32,208.96 = 5,889.92/x
  3. Step 3: Cross multiply
    21,472.88x = 32,208.96 × 5,889.92
  4. Step 4: Simplify right side
    21,472.88x = 189,708,197.68
  5. Step 5: Solve for x
    x = 189,708,197.68/21,472.88
  6. Step 6: Final answer
    x = 8,834.78

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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.