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Finding the Fourth Proportional to 1,198.01, 1,793.75 and 619.67

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Solution

The fourth proportional to 1,198.01, 1,793.75 and 619.67 is: 927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.01 : 1,793.75 = 619.67 : x
  2. Step 2: Convert to fraction form
    1,198.01/1,793.75 = 619.67/x
  3. Step 3: Cross multiply
    1,198.01x = 1,793.75 × 619.67
  4. Step 4: Simplify right side
    1,198.01x = 1,111,521.00
  5. Step 5: Solve for x
    x = 1,111,521.00/1,198.01
  6. Step 6: Final answer
    x = 927.81

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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.