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Finding the Fourth Proportional to 70,745.83, 106,093.07 and 38,748.67

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Solution

The fourth proportional to 70,745.83, 106,093.07 and 38,748.67 is: 58,108.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,745.83 : 106,093.07 = 38,748.67 : x
  2. Step 2: Convert to fraction form
    70,745.83/106,093.07 = 38,748.67/x
  3. Step 3: Cross multiply
    70,745.83x = 106,093.07 × 38,748.67
  4. Step 4: Simplify right side
    70,745.83x = 4,110,965,164.97
  5. Step 5: Solve for x
    x = 4,110,965,164.97/70,745.83
  6. Step 6: Final answer
    x = 58,108.94

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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.