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Finding the Fourth Proportional to 3,556.98, 5,334.84 and 959.58

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Solution

The fourth proportional to 3,556.98, 5,334.84 and 959.58 is: 1,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.98 : 5,334.84 = 959.58 : x
  2. Step 2: Convert to fraction form
    3,556.98/5,334.84 = 959.58/x
  3. Step 3: Cross multiply
    3,556.98x = 5,334.84 × 959.58
  4. Step 4: Simplify right side
    3,556.98x = 5,119,205.77
  5. Step 5: Solve for x
    x = 5,119,205.77/3,556.98
  6. Step 6: Final answer
    x = 1,439.20

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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.