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Finding the Fourth Proportional to 4,939.98, 7,405.20 and 1,651.24

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Solution

The fourth proportional to 4,939.98, 7,405.20 and 1,651.24 is: 2,475.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.98 : 7,405.20 = 1,651.24 : x
  2. Step 2: Convert to fraction form
    4,939.98/7,405.20 = 1,651.24/x
  3. Step 3: Cross multiply
    4,939.98x = 7,405.20 × 1,651.24
  4. Step 4: Simplify right side
    4,939.98x = 12,227,762.45
  5. Step 5: Solve for x
    x = 12,227,762.45/4,939.98
  6. Step 6: Final answer
    x = 2,475.27

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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.