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Finding the Fourth Proportional to 19,043.52, 28,564.83 and 7,949.99

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Solution

The fourth proportional to 19,043.52, 28,564.83 and 7,949.99 is: 11,924.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,043.52 : 28,564.83 = 7,949.99 : x
  2. Step 2: Convert to fraction form
    19,043.52/28,564.83 = 7,949.99/x
  3. Step 3: Cross multiply
    19,043.52x = 28,564.83 × 7,949.99
  4. Step 4: Simplify right side
    19,043.52x = 227,089,970.03
  5. Step 5: Solve for x
    x = 227,089,970.03/19,043.52
  6. Step 6: Final answer
    x = 11,924.79

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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.