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Finding the Fourth Proportional to 18,978.28, 26,190.18 and 10,594.60

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Solution

The fourth proportional to 18,978.28, 26,190.18 and 10,594.60 is: 14,620.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978.28 : 26,190.18 = 10,594.60 : x
  2. Step 2: Convert to fraction form
    18,978.28/26,190.18 = 10,594.60/x
  3. Step 3: Cross multiply
    18,978.28x = 26,190.18 × 10,594.60
  4. Step 4: Simplify right side
    18,978.28x = 277,474,481.03
  5. Step 5: Solve for x
    x = 277,474,481.03/18,978.28
  6. Step 6: Final answer
    x = 14,620.63

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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.