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Finding the Fourth Proportional to 1,194.66, 1,791.90 and 710.79

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Solution

The fourth proportional to 1,194.66, 1,791.90 and 710.79 is: 1,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.66 : 1,791.90 = 710.79 : x
  2. Step 2: Convert to fraction form
    1,194.66/1,791.90 = 710.79/x
  3. Step 3: Cross multiply
    1,194.66x = 1,791.90 × 710.79
  4. Step 4: Simplify right side
    1,194.66x = 1,273,664.60
  5. Step 5: Solve for x
    x = 1,273,664.60/1,194.66
  6. Step 6: Final answer
    x = 1,066.13

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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.