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Finding the Fourth Proportional to 36,489.39, 50,355.36 and 19,722.39

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Solution

The fourth proportional to 36,489.39, 50,355.36 and 19,722.39 is: 27,216.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,489.39 : 50,355.36 = 19,722.39 : x
  2. Step 2: Convert to fraction form
    36,489.39/50,355.36 = 19,722.39/x
  3. Step 3: Cross multiply
    36,489.39x = 50,355.36 × 19,722.39
  4. Step 4: Simplify right side
    36,489.39x = 993,128,048.51
  5. Step 5: Solve for x
    x = 993,128,048.51/36,489.39
  6. Step 6: Final answer
    x = 27,216.90

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1.5x scale

Why These Related Problems?

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