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Finding the Fourth Proportional to 339,655.36, 468,687.18 and 196,393.72

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Solution

The fourth proportional to 339,655.36, 468,687.18 and 196,393.72 is: 271,001.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,655.36 : 468,687.18 = 196,393.72 : x
  2. Step 2: Convert to fraction form
    339,655.36/468,687.18 = 196,393.72/x
  3. Step 3: Cross multiply
    339,655.36x = 468,687.18 × 196,393.72
  4. Step 4: Simplify right side
    339,655.36x = 92,047,218,796.51
  5. Step 5: Solve for x
    x = 92,047,218,796.51/339,655.36
  6. Step 6: Final answer
    x = 271,001.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.