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Finding the Fourth Proportional to 33,305.88, 45,963.94 and 18,970.21

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Solution

The fourth proportional to 33,305.88, 45,963.94 and 18,970.21 is: 26,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,305.88 : 45,963.94 = 18,970.21 : x
  2. Step 2: Convert to fraction form
    33,305.88/45,963.94 = 18,970.21/x
  3. Step 3: Cross multiply
    33,305.88x = 45,963.94 × 18,970.21
  4. Step 4: Simplify right side
    33,305.88x = 871,945,644.68
  5. Step 5: Solve for x
    x = 871,945,644.68/33,305.88
  6. Step 6: Final answer
    x = 26,179.93

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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.