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Finding the Fourth Proportional to 1,641.89, 2,463 and 546.34

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Solution

The fourth proportional to 1,641.89, 2,463 and 546.34 is: 819.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.89 : 2,463 = 546.34 : x
  2. Step 2: Convert to fraction form
    1,641.89/2,463 = 546.34/x
  3. Step 3: Cross multiply
    1,641.89x = 2,463 × 546.34
  4. Step 4: Simplify right side
    1,641.89x = 1,345,629.26
  5. Step 5: Solve for x
    x = 1,345,629.26/1,641.89
  6. Step 6: Final answer
    x = 819.56

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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.