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Finding the Fourth Proportional to 36,991.88, 51,048.98 and 20,224.88

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Solution

The fourth proportional to 36,991.88, 51,048.98 and 20,224.88 is: 27,910.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,991.88 : 51,048.98 = 20,224.88 : x
  2. Step 2: Convert to fraction form
    36,991.88/51,048.98 = 20,224.88/x
  3. Step 3: Cross multiply
    36,991.88x = 51,048.98 × 20,224.88
  4. Step 4: Simplify right side
    36,991.88x = 1,032,459,138.25
  5. Step 5: Solve for x
    x = 1,032,459,138.25/36,991.88
  6. Step 6: Final answer
    x = 27,910.43

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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.