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Finding the Fourth Proportional to 356,418.41, 491,857.40 and 195,279.56

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Solution

The fourth proportional to 356,418.41, 491,857.40 and 195,279.56 is: 269,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,418.41 : 491,857.40 = 195,279.56 : x
  2. Step 2: Convert to fraction form
    356,418.41/491,857.40 = 195,279.56/x
  3. Step 3: Cross multiply
    356,418.41x = 491,857.40 × 195,279.56
  4. Step 4: Simplify right side
    356,418.41x = 96,049,695,678.35
  5. Step 5: Solve for x
    x = 96,049,695,678.35/356,418.41
  6. Step 6: Final answer
    x = 269,485.79

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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.