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Finding the Fourth Proportional to 21,906.43, 32,828.59 and 16,953.01

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Solution

The fourth proportional to 21,906.43, 32,828.59 and 16,953.01 is: 25,405.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.43 : 32,828.59 = 16,953.01 : x
  2. Step 2: Convert to fraction form
    21,906.43/32,828.59 = 16,953.01/x
  3. Step 3: Cross multiply
    21,906.43x = 32,828.59 × 16,953.01
  4. Step 4: Simplify right side
    21,906.43x = 556,543,414.56
  5. Step 5: Solve for x
    x = 556,543,414.56/21,906.43
  6. Step 6: Final answer
    x = 25,405.48

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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.