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Finding the Fourth Proportional to 27,479.87, 37,922.21 and 15,542.94

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Solution

The fourth proportional to 27,479.87, 37,922.21 and 15,542.94 is: 21,449.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,479.87 : 37,922.21 = 15,542.94 : x
  2. Step 2: Convert to fraction form
    27,479.87/37,922.21 = 15,542.94/x
  3. Step 3: Cross multiply
    27,479.87x = 37,922.21 × 15,542.94
  4. Step 4: Simplify right side
    27,479.87x = 589,422,556.98
  5. Step 5: Solve for x
    x = 589,422,556.98/27,479.87
  6. Step 6: Final answer
    x = 21,449.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.