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Finding the Fourth Proportional to 18,698.76, 28,052.46 and 5,550.84

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Solution

The fourth proportional to 18,698.76, 28,052.46 and 5,550.84 is: 8,327.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.76 : 28,052.46 = 5,550.84 : x
  2. Step 2: Convert to fraction form
    18,698.76/28,052.46 = 5,550.84/x
  3. Step 3: Cross multiply
    18,698.76x = 28,052.46 × 5,550.84
  4. Step 4: Simplify right side
    18,698.76x = 155,714,717.07
  5. Step 5: Solve for x
    x = 155,714,717.07/18,698.76
  6. Step 6: Final answer
    x = 8,327.54

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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.