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Finding the Fourth Proportional to 12,363.81, 18,550.46 and 7,436.94

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Solution

The fourth proportional to 12,363.81, 18,550.46 and 7,436.94 is: 11,158.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,363.81 : 18,550.46 = 7,436.94 : x
  2. Step 2: Convert to fraction form
    12,363.81/18,550.46 = 7,436.94/x
  3. Step 3: Cross multiply
    12,363.81x = 18,550.46 × 7,436.94
  4. Step 4: Simplify right side
    12,363.81x = 137,958,620.81
  5. Step 5: Solve for x
    x = 137,958,620.81/12,363.81
  6. Step 6: Final answer
    x = 11,158.26

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1.5x scale

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.