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Finding the Fourth Proportional to 330,206.70, 455,687.22 and 194,246.22

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Solution

The fourth proportional to 330,206.70, 455,687.22 and 194,246.22 is: 268,060.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,206.70 : 455,687.22 = 194,246.22 : x
  2. Step 2: Convert to fraction form
    330,206.70/455,687.22 = 194,246.22/x
  3. Step 3: Cross multiply
    330,206.70x = 455,687.22 × 194,246.22
  4. Step 4: Simplify right side
    330,206.70x = 88,515,519,987.31
  5. Step 5: Solve for x
    x = 88,515,519,987.31/330,206.70
  6. Step 6: Final answer
    x = 268,060.94

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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.