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Finding the Fourth Proportional to 13,363.86, 18,440.46 and 7,394.70

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Solution

The fourth proportional to 13,363.86, 18,440.46 and 7,394.70 is: 10,203.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.86 : 18,440.46 = 7,394.70 : x
  2. Step 2: Convert to fraction form
    13,363.86/18,440.46 = 7,394.70/x
  3. Step 3: Cross multiply
    13,363.86x = 18,440.46 × 7,394.70
  4. Step 4: Simplify right side
    13,363.86x = 136,361,669.56
  5. Step 5: Solve for x
    x = 136,361,669.56/13,363.86
  6. Step 6: Final answer
    x = 10,203.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.