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Finding the Fourth Proportional to 29,919, 44,878.50 and 8,031

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Solution

The fourth proportional to 29,919, 44,878.50 and 8,031 is: 12,046.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,919 : 44,878.50 = 8,031 : x
  2. Step 2: Convert to fraction form
    29,919/44,878.50 = 8,031/x
  3. Step 3: Cross multiply
    29,919x = 44,878.50 × 8,031
  4. Step 4: Simplify right side
    29,919x = 360,419,233.50
  5. Step 5: Solve for x
    x = 360,419,233.50/29,919
  6. Step 6: Final answer
    x = 12,046.50

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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.