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Finding the Fourth Proportional to 92,912.60, 139,326.36 and 29,720.48

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Solution

The fourth proportional to 92,912.60, 139,326.36 and 29,720.48 is: 44,567.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,912.60 : 139,326.36 = 29,720.48 : x
  2. Step 2: Convert to fraction form
    92,912.60/139,326.36 = 29,720.48/x
  3. Step 3: Cross multiply
    92,912.60x = 139,326.36 × 29,720.48
  4. Step 4: Simplify right side
    92,912.60x = 4,140,846,295.85
  5. Step 5: Solve for x
    x = 4,140,846,295.85/92,912.60
  6. Step 6: Final answer
    x = 44,567.11

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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.