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Finding the Fourth Proportional to 13,913.94, 20,866.48 and 4,551.44

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Solution

The fourth proportional to 13,913.94, 20,866.48 and 4,551.44 is: 6,825.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.94 : 20,866.48 = 4,551.44 : x
  2. Step 2: Convert to fraction form
    13,913.94/20,866.48 = 4,551.44/x
  3. Step 3: Cross multiply
    13,913.94x = 20,866.48 × 4,551.44
  4. Step 4: Simplify right side
    13,913.94x = 94,972,533.39
  5. Step 5: Solve for x
    x = 94,972,533.39/13,913.94
  6. Step 6: Final answer
    x = 6,825.71

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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.