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Finding the Fourth Proportional to 18,796.81, 28,206.31 and 6,958.89

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Solution

The fourth proportional to 18,796.81, 28,206.31 and 6,958.89 is: 10,442.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.81 : 28,206.31 = 6,958.89 : x
  2. Step 2: Convert to fraction form
    18,796.81/28,206.31 = 6,958.89/x
  3. Step 3: Cross multiply
    18,796.81x = 28,206.31 × 6,958.89
  4. Step 4: Simplify right side
    18,796.81x = 196,284,608.60
  5. Step 5: Solve for x
    x = 196,284,608.60/18,796.81
  6. Step 6: Final answer
    x = 10,442.44

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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.