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Finding the Fourth Proportional to 22,559.64, 33,991.74 and 18,696.78

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Solution

The fourth proportional to 22,559.64, 33,991.74 and 18,696.78 is: 28,171.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,559.64 : 33,991.74 = 18,696.78 : x
  2. Step 2: Convert to fraction form
    22,559.64/33,991.74 = 18,696.78/x
  3. Step 3: Cross multiply
    22,559.64x = 33,991.74 × 18,696.78
  4. Step 4: Simplify right side
    22,559.64x = 635,536,084.60
  5. Step 5: Solve for x
    x = 635,536,084.60/22,559.64
  6. Step 6: Final answer
    x = 28,171.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.