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Finding the Fourth Proportional to 1,194.91, 1,649 and 670.93

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Solution

The fourth proportional to 1,194.91, 1,649 and 670.93 is: 925.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.91 : 1,649 = 670.93 : x
  2. Step 2: Convert to fraction form
    1,194.91/1,649 = 670.93/x
  3. Step 3: Cross multiply
    1,194.91x = 1,649 × 670.93
  4. Step 4: Simplify right side
    1,194.91x = 1,106,363.57
  5. Step 5: Solve for x
    x = 1,106,363.57/1,194.91
  6. Step 6: Final answer
    x = 925.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.