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Finding the Fourth Proportional to 36,940.84, 55,378.20 and 13,561.84

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Solution

The fourth proportional to 36,940.84, 55,378.20 and 13,561.84 is: 20,330.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,940.84 : 55,378.20 = 13,561.84 : x
  2. Step 2: Convert to fraction form
    36,940.84/55,378.20 = 13,561.84/x
  3. Step 3: Cross multiply
    36,940.84x = 55,378.20 × 13,561.84
  4. Step 4: Simplify right side
    36,940.84x = 751,030,287.89
  5. Step 5: Solve for x
    x = 751,030,287.89/36,940.84
  6. Step 6: Final answer
    x = 20,330.62

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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.