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Finding the Fourth Proportional to 92,940.64, 139,421.05 and 29,745.86

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Solution

The fourth proportional to 92,940.64, 139,421.05 and 29,745.86 is: 44,622.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,940.64 : 139,421.05 = 29,745.86 : x
  2. Step 2: Convert to fraction form
    92,940.64/139,421.05 = 29,745.86/x
  3. Step 3: Cross multiply
    92,940.64x = 139,421.05 × 29,745.86
  4. Step 4: Simplify right side
    92,940.64x = 4,147,198,262.88
  5. Step 5: Solve for x
    x = 4,147,198,262.88/92,940.64
  6. Step 6: Final answer
    x = 44,622.01

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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.