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Finding the Fourth Proportional to 92,969.12, 139,409.92 and 33,763

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Solution

The fourth proportional to 92,969.12, 139,409.92 and 33,763 is: 50,628.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,969.12 : 139,409.92 = 33,763 : x
  2. Step 2: Convert to fraction form
    92,969.12/139,409.92 = 33,763/x
  3. Step 3: Cross multiply
    92,969.12x = 139,409.92 × 33,763
  4. Step 4: Simplify right side
    92,969.12x = 4,706,897,128.96
  5. Step 5: Solve for x
    x = 4,706,897,128.96/92,969.12
  6. Step 6: Final answer
    x = 50,628.61

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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.