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Finding the Fourth Proportional to 1,241.68, 1,712.92 and 799.44

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Solution

The fourth proportional to 1,241.68, 1,712.92 and 799.44 is: 1,102.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.68 : 1,712.92 = 799.44 : x
  2. Step 2: Convert to fraction form
    1,241.68/1,712.92 = 799.44/x
  3. Step 3: Cross multiply
    1,241.68x = 1,712.92 × 799.44
  4. Step 4: Simplify right side
    1,241.68x = 1,369,376.76
  5. Step 5: Solve for x
    x = 1,369,376.76/1,241.68
  6. Step 6: Final answer
    x = 1,102.84

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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.