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Finding the Fourth Proportional to 62,408.40, 93,612.60 and 38,788.80

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Solution

The fourth proportional to 62,408.40, 93,612.60 and 38,788.80 is: 58,183.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,408.40 : 93,612.60 = 38,788.80 : x
  2. Step 2: Convert to fraction form
    62,408.40/93,612.60 = 38,788.80/x
  3. Step 3: Cross multiply
    62,408.40x = 93,612.60 × 38,788.80
  4. Step 4: Simplify right side
    62,408.40x = 3,631,120,418.88
  5. Step 5: Solve for x
    x = 3,631,120,418.88/62,408.40
  6. Step 6: Final answer
    x = 58,183.20

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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.