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Finding the Fourth Proportional to 113,408.61, 170,137.53 and 34,520.79

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Solution

The fourth proportional to 113,408.61, 170,137.53 and 34,520.79 is: 51,788.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,408.61 : 170,137.53 = 34,520.79 : x
  2. Step 2: Convert to fraction form
    113,408.61/170,137.53 = 34,520.79/x
  3. Step 3: Cross multiply
    113,408.61x = 170,137.53 × 34,520.79
  4. Step 4: Simplify right side
    113,408.61x = 5,873,281,944.25
  5. Step 5: Solve for x
    x = 5,873,281,944.25/113,408.61
  6. Step 6: Final answer
    x = 51,788.68

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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.