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Finding the Fourth Proportional to 19,197.91, 28,800.78 and 10,881.64

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Solution

The fourth proportional to 19,197.91, 28,800.78 and 10,881.64 is: 16,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,197.91 : 28,800.78 = 10,881.64 : x
  2. Step 2: Convert to fraction form
    19,197.91/28,800.78 = 10,881.64/x
  3. Step 3: Cross multiply
    19,197.91x = 28,800.78 × 10,881.64
  4. Step 4: Simplify right side
    19,197.91x = 313,399,719.68
  5. Step 5: Solve for x
    x = 313,399,719.68/19,197.91
  6. Step 6: Final answer
    x = 16,324.68

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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.