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Finding the Fourth Proportional to 207,918.70, 311,878.05 and 194,796.70

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Solution

The fourth proportional to 207,918.70, 311,878.05 and 194,796.70 is: 292,195.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,918.70 : 311,878.05 = 194,796.70 : x
  2. Step 2: Convert to fraction form
    207,918.70/311,878.05 = 194,796.70/x
  3. Step 3: Cross multiply
    207,918.70x = 311,878.05 × 194,796.70
  4. Step 4: Simplify right side
    207,918.70x = 60,752,814,942.44
  5. Step 5: Solve for x
    x = 60,752,814,942.44/207,918.70
  6. Step 6: Final answer
    x = 292,195.05

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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.