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Finding the Fourth Proportional to 92,750.96, 139,153.68 and 31,976.60

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Solution

The fourth proportional to 92,750.96, 139,153.68 and 31,976.60 is: 47,974.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,750.96 : 139,153.68 = 31,976.60 : x
  2. Step 2: Convert to fraction form
    92,750.96/139,153.68 = 31,976.60/x
  3. Step 3: Cross multiply
    92,750.96x = 139,153.68 × 31,976.60
  4. Step 4: Simplify right side
    92,750.96x = 4,449,661,563.89
  5. Step 5: Solve for x
    x = 4,449,661,563.89/92,750.96
  6. Step 6: Final answer
    x = 47,974.29

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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.