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Finding the Fourth Proportional to 1,994.08, 2,987.16 and 1,583.92

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Solution

The fourth proportional to 1,994.08, 2,987.16 and 1,583.92 is: 2,372.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,994.08 : 2,987.16 = 1,583.92 : x
  2. Step 2: Convert to fraction form
    1,994.08/2,987.16 = 1,583.92/x
  3. Step 3: Cross multiply
    1,994.08x = 2,987.16 × 1,583.92
  4. Step 4: Simplify right side
    1,994.08x = 4,731,422.47
  5. Step 5: Solve for x
    x = 4,731,422.47/1,994.08
  6. Step 6: Final answer
    x = 2,372.73

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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.