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Finding the Fourth Proportional to 339,883.32, 468,986.40 and 196,656.72

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Solution

The fourth proportional to 339,883.32, 468,986.40 and 196,656.72 is: 271,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,883.32 : 468,986.40 = 196,656.72 : x
  2. Step 2: Convert to fraction form
    339,883.32/468,986.40 = 196,656.72/x
  3. Step 3: Cross multiply
    339,883.32x = 468,986.40 × 196,656.72
  4. Step 4: Simplify right side
    339,883.32x = 92,229,327,148.61
  5. Step 5: Solve for x
    x = 92,229,327,148.61/339,883.32
  6. Step 6: Final answer
    x = 271,355.85

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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.