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Finding the Fourth Proportional to 2,963.10, 4,444.90 and 771.82

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Solution

The fourth proportional to 2,963.10, 4,444.90 and 771.82 is: 1,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,963.10 : 4,444.90 = 771.82 : x
  2. Step 2: Convert to fraction form
    2,963.10/4,444.90 = 771.82/x
  3. Step 3: Cross multiply
    2,963.10x = 4,444.90 × 771.82
  4. Step 4: Simplify right side
    2,963.10x = 3,430,664.65
  5. Step 5: Solve for x
    x = 3,430,664.65/2,963.10
  6. Step 6: Final answer
    x = 1,157.80

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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.