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Finding the Fourth Proportional to 1,067.64, 1,473.66 and 674.93

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Solution

The fourth proportional to 1,067.64, 1,473.66 and 674.93 is: 931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.64 : 1,473.66 = 674.93 : x
  2. Step 2: Convert to fraction form
    1,067.64/1,473.66 = 674.93/x
  3. Step 3: Cross multiply
    1,067.64x = 1,473.66 × 674.93
  4. Step 4: Simplify right side
    1,067.64x = 994,617.34
  5. Step 5: Solve for x
    x = 994,617.34/1,067.64
  6. Step 6: Final answer
    x = 931.60

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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.