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Finding the Fourth Proportional to 92,739.88, 139,120.68 and 29,537.80

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Solution

The fourth proportional to 92,739.88, 139,120.68 and 29,537.80 is: 44,310.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,739.88 : 139,120.68 = 29,537.80 : x
  2. Step 2: Convert to fraction form
    92,739.88/139,120.68 = 29,537.80/x
  3. Step 3: Cross multiply
    92,739.88x = 139,120.68 × 29,537.80
  4. Step 4: Simplify right side
    92,739.88x = 4,109,318,821.70
  5. Step 5: Solve for x
    x = 4,109,318,821.70/92,739.88
  6. Step 6: Final answer
    x = 44,310.16

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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.