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Finding the Fourth Proportional to 51,408.50, 70,914.15 and 30,183.66

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Solution

The fourth proportional to 51,408.50, 70,914.15 and 30,183.66 is: 41,636.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,408.50 : 70,914.15 = 30,183.66 : x
  2. Step 2: Convert to fraction form
    51,408.50/70,914.15 = 30,183.66/x
  3. Step 3: Cross multiply
    51,408.50x = 70,914.15 × 30,183.66
  4. Step 4: Simplify right side
    51,408.50x = 2,140,448,592.79
  5. Step 5: Solve for x
    x = 2,140,448,592.79/51,408.50
  6. Step 6: Final answer
    x = 41,636.09

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1.5x scale

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.