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Finding the Fourth Proportional to 994.07, 1,372.01 and 574.70

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Solution

The fourth proportional to 994.07, 1,372.01 and 574.70 is: 793.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.07 : 1,372.01 = 574.70 : x
  2. Step 2: Convert to fraction form
    994.07/1,372.01 = 574.70/x
  3. Step 3: Cross multiply
    994.07x = 1,372.01 × 574.70
  4. Step 4: Simplify right side
    994.07x = 788,484.41
  5. Step 5: Solve for x
    x = 788,484.41/994.07
  6. Step 6: Final answer
    x = 793.19

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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.