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Finding the Fourth Proportional to 2,249.48, 3,374.24 and 788.63

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Solution

The fourth proportional to 2,249.48, 3,374.24 and 788.63 is: 1,182.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,249.48 : 3,374.24 = 788.63 : x
  2. Step 2: Convert to fraction form
    2,249.48/3,374.24 = 788.63/x
  3. Step 3: Cross multiply
    2,249.48x = 3,374.24 × 788.63
  4. Step 4: Simplify right side
    2,249.48x = 2,661,026.89
  5. Step 5: Solve for x
    x = 2,661,026.89/2,249.48
  6. Step 6: Final answer
    x = 1,182.95

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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.