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Finding the Fourth Proportional to 4,917.99, 7,380 and 1,996.32

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Solution

The fourth proportional to 4,917.99, 7,380 and 1,996.32 is: 2,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.99 : 7,380 = 1,996.32 : x
  2. Step 2: Convert to fraction form
    4,917.99/7,380 = 1,996.32/x
  3. Step 3: Cross multiply
    4,917.99x = 7,380 × 1,996.32
  4. Step 4: Simplify right side
    4,917.99x = 14,732,841.60
  5. Step 5: Solve for x
    x = 14,732,841.60/4,917.99
  6. Step 6: Final answer
    x = 2,995.70

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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.