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Finding the Fourth Proportional to 213,196.56, 319,739.08 and 63,396.48

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Solution

The fourth proportional to 213,196.56, 319,739.08 and 63,396.48 is: 95,078.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,196.56 : 319,739.08 = 63,396.48 : x
  2. Step 2: Convert to fraction form
    213,196.56/319,739.08 = 63,396.48/x
  3. Step 3: Cross multiply
    213,196.56x = 319,739.08 × 63,396.48
  4. Step 4: Simplify right side
    213,196.56x = 20,270,332,190.44
  5. Step 5: Solve for x
    x = 20,270,332,190.44/213,196.56
  6. Step 6: Final answer
    x = 95,078.14

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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.