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Finding the Fourth Proportional to 34,398.72, 51,603.12 and 12,205.68

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Solution

The fourth proportional to 34,398.72, 51,603.12 and 12,205.68 is: 18,310.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,398.72 : 51,603.12 = 12,205.68 : x
  2. Step 2: Convert to fraction form
    34,398.72/51,603.12 = 12,205.68/x
  3. Step 3: Cross multiply
    34,398.72x = 51,603.12 × 12,205.68
  4. Step 4: Simplify right side
    34,398.72x = 629,851,169.72
  5. Step 5: Solve for x
    x = 629,851,169.72/34,398.72
  6. Step 6: Final answer
    x = 18,310.31

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.