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Finding the Fourth Proportional to 203,986.72, 305,980.02 and 63,745.36

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Solution

The fourth proportional to 203,986.72, 305,980.02 and 63,745.36 is: 95,618.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,986.72 : 305,980.02 = 63,745.36 : x
  2. Step 2: Convert to fraction form
    203,986.72/305,980.02 = 63,745.36/x
  3. Step 3: Cross multiply
    203,986.72x = 305,980.02 × 63,745.36
  4. Step 4: Simplify right side
    203,986.72x = 19,504,806,527.71
  5. Step 5: Solve for x
    x = 19,504,806,527.71/203,986.72
  6. Step 6: Final answer
    x = 95,618.02

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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.