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Finding the Fourth Proportional to 19,007.64, 28,496.08 and 7,922.64

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Solution

The fourth proportional to 19,007.64, 28,496.08 and 7,922.64 is: 11,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007.64 : 28,496.08 = 7,922.64 : x
  2. Step 2: Convert to fraction form
    19,007.64/28,496.08 = 7,922.64/x
  3. Step 3: Cross multiply
    19,007.64x = 28,496.08 × 7,922.64
  4. Step 4: Simplify right side
    19,007.64x = 225,764,183.25
  5. Step 5: Solve for x
    x = 225,764,183.25/19,007.64
  6. Step 6: Final answer
    x = 11,877.55

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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.