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Finding the Fourth Proportional to 3,354.47, 5,031.26 and 889.43

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Solution

The fourth proportional to 3,354.47, 5,031.26 and 889.43 is: 1,334.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,354.47 : 5,031.26 = 889.43 : x
  2. Step 2: Convert to fraction form
    3,354.47/5,031.26 = 889.43/x
  3. Step 3: Cross multiply
    3,354.47x = 5,031.26 × 889.43
  4. Step 4: Simplify right side
    3,354.47x = 4,474,949.13
  5. Step 5: Solve for x
    x = 4,474,949.13/3,354.47
  6. Step 6: Final answer
    x = 1,334.03

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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.