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Finding the Fourth Proportional to 26,561.20, 39,784.20 and 21,953.20

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Solution

The fourth proportional to 26,561.20, 39,784.20 and 21,953.20 is: 32,882.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,561.20 : 39,784.20 = 21,953.20 : x
  2. Step 2: Convert to fraction form
    26,561.20/39,784.20 = 21,953.20/x
  3. Step 3: Cross multiply
    26,561.20x = 39,784.20 × 21,953.20
  4. Step 4: Simplify right side
    26,561.20x = 873,390,499.44
  5. Step 5: Solve for x
    x = 873,390,499.44/26,561.20
  6. Step 6: Final answer
    x = 32,882.19

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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.