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Finding the Fourth Proportional to 322,980.66, 445,251.40 and 227,190.06

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Solution

The fourth proportional to 322,980.66, 445,251.40 and 227,190.06 is: 313,197.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,980.66 : 445,251.40 = 227,190.06 : x
  2. Step 2: Convert to fraction form
    322,980.66/445,251.40 = 227,190.06/x
  3. Step 3: Cross multiply
    322,980.66x = 445,251.40 × 227,190.06
  4. Step 4: Simplify right side
    322,980.66x = 101,156,691,713.11
  5. Step 5: Solve for x
    x = 101,156,691,713.11/322,980.66
  6. Step 6: Final answer
    x = 313,197.37

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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.