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Finding the Fourth Proportional to 29,768.12, 44,650.90 and 8,991

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Solution

The fourth proportional to 29,768.12, 44,650.90 and 8,991 is: 13,486.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,768.12 : 44,650.90 = 8,991 : x
  2. Step 2: Convert to fraction form
    29,768.12/44,650.90 = 8,991/x
  3. Step 3: Cross multiply
    29,768.12x = 44,650.90 × 8,991
  4. Step 4: Simplify right side
    29,768.12x = 401,456,241.90
  5. Step 5: Solve for x
    x = 401,456,241.90/29,768.12
  6. Step 6: Final answer
    x = 13,486.11

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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.