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Finding the Fourth Proportional to 18,273.75, 27,410.76 and 4,422.75

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Solution

The fourth proportional to 18,273.75, 27,410.76 and 4,422.75 is: 6,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.75 : 27,410.76 = 4,422.75 : x
  2. Step 2: Convert to fraction form
    18,273.75/27,410.76 = 4,422.75/x
  3. Step 3: Cross multiply
    18,273.75x = 27,410.76 × 4,422.75
  4. Step 4: Simplify right side
    18,273.75x = 121,230,938.79
  5. Step 5: Solve for x
    x = 121,230,938.79/18,273.75
  6. Step 6: Final answer
    x = 6,634.16

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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.