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Finding the Fourth Proportional to 20,594.40, 30,891.60 and 11,846.40

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Solution

The fourth proportional to 20,594.40, 30,891.60 and 11,846.40 is: 17,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,594.40 : 30,891.60 = 11,846.40 : x
  2. Step 2: Convert to fraction form
    20,594.40/30,891.60 = 11,846.40/x
  3. Step 3: Cross multiply
    20,594.40x = 30,891.60 × 11,846.40
  4. Step 4: Simplify right side
    20,594.40x = 365,954,250.24
  5. Step 5: Solve for x
    x = 365,954,250.24/20,594.40
  6. Step 6: Final answer
    x = 17,769.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.