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Finding the Fourth Proportional to 27,152.76, 37,469.78 and 15,216.20

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Solution

The fourth proportional to 27,152.76, 37,469.78 and 15,216.20 is: 20,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,152.76 : 37,469.78 = 15,216.20 : x
  2. Step 2: Convert to fraction form
    27,152.76/37,469.78 = 15,216.20/x
  3. Step 3: Cross multiply
    27,152.76x = 37,469.78 × 15,216.20
  4. Step 4: Simplify right side
    27,152.76x = 570,147,666.44
  5. Step 5: Solve for x
    x = 570,147,666.44/27,152.76
  6. Step 6: Final answer
    x = 20,997.78

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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.