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Finding the Fourth Proportional to 1,194, 1,791.64 and 906

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Solution

The fourth proportional to 1,194, 1,791.64 and 906 is: 1,359.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194 : 1,791.64 = 906 : x
  2. Step 2: Convert to fraction form
    1,194/1,791.64 = 906/x
  3. Step 3: Cross multiply
    1,194x = 1,791.64 × 906
  4. Step 4: Simplify right side
    1,194x = 1,623,225.84
  5. Step 5: Solve for x
    x = 1,623,225.84/1,194
  6. Step 6: Final answer
    x = 1,359.49

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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.