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Finding the Fourth Proportional to 347,511, 479,561.94 and 196,608

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Solution

The fourth proportional to 347,511, 479,561.94 and 196,608 is: 271,317.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,511 : 479,561.94 = 196,608 : x
  2. Step 2: Convert to fraction form
    347,511/479,561.94 = 196,608/x
  3. Step 3: Cross multiply
    347,511x = 479,561.94 × 196,608
  4. Step 4: Simplify right side
    347,511x = 94,285,713,899.52
  5. Step 5: Solve for x
    x = 94,285,713,899.52/347,511
  6. Step 6: Final answer
    x = 271,317.21

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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.