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Finding the Fourth Proportional to 4,791.78, 7,188.21 and 1,503.99

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Solution

The fourth proportional to 4,791.78, 7,188.21 and 1,503.99 is: 2,256.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791.78 : 7,188.21 = 1,503.99 : x
  2. Step 2: Convert to fraction form
    4,791.78/7,188.21 = 1,503.99/x
  3. Step 3: Cross multiply
    4,791.78x = 7,188.21 × 1,503.99
  4. Step 4: Simplify right side
    4,791.78x = 10,810,995.96
  5. Step 5: Solve for x
    x = 10,810,995.96/4,791.78
  6. Step 6: Final answer
    x = 2,256.15

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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.