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Finding the Fourth Proportional to 1,361.98, 2,043.23 and 581.98

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Solution

The fourth proportional to 1,361.98, 2,043.23 and 581.98 is: 873.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361.98 : 2,043.23 = 581.98 : x
  2. Step 2: Convert to fraction form
    1,361.98/2,043.23 = 581.98/x
  3. Step 3: Cross multiply
    1,361.98x = 2,043.23 × 581.98
  4. Step 4: Simplify right side
    1,361.98x = 1,189,119.00
  5. Step 5: Solve for x
    x = 1,189,119.00/1,361.98
  6. Step 6: Final answer
    x = 873.08

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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.