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Finding the Fourth Proportional to 13,851, 19,116 and 7,884.54

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Solution

The fourth proportional to 13,851, 19,116 and 7,884.54 is: 10,881.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851 : 19,116 = 7,884.54 : x
  2. Step 2: Convert to fraction form
    13,851/19,116 = 7,884.54/x
  3. Step 3: Cross multiply
    13,851x = 19,116 × 7,884.54
  4. Step 4: Simplify right side
    13,851x = 150,720,866.64
  5. Step 5: Solve for x
    x = 150,720,866.64/13,851
  6. Step 6: Final answer
    x = 10,881.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.