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Finding the Fourth Proportional to 1,105.99, 1,658.97 and 376.08

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Solution

The fourth proportional to 1,105.99, 1,658.97 and 376.08 is: 564.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105.99 : 1,658.97 = 376.08 : x
  2. Step 2: Convert to fraction form
    1,105.99/1,658.97 = 376.08/x
  3. Step 3: Cross multiply
    1,105.99x = 1,658.97 × 376.08
  4. Step 4: Simplify right side
    1,105.99x = 623,905.44
  5. Step 5: Solve for x
    x = 623,905.44/1,105.99
  6. Step 6: Final answer
    x = 564.11

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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.