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Finding the Fourth Proportional to 21,789.76, 32,674.86 and 6,203.68

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Solution

The fourth proportional to 21,789.76, 32,674.86 and 6,203.68 is: 9,302.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.76 : 32,674.86 = 6,203.68 : x
  2. Step 2: Convert to fraction form
    21,789.76/32,674.86 = 6,203.68/x
  3. Step 3: Cross multiply
    21,789.76x = 32,674.86 × 6,203.68
  4. Step 4: Simplify right side
    21,789.76x = 202,704,375.48
  5. Step 5: Solve for x
    x = 202,704,375.48/21,789.76
  6. Step 6: Final answer
    x = 9,302.74

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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.