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Finding the Fourth Proportional to 6,991.74, 9,648.63 and 3,848.04

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Solution

The fourth proportional to 6,991.74, 9,648.63 and 3,848.04 is: 5,310.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.74 : 9,648.63 = 3,848.04 : x
  2. Step 2: Convert to fraction form
    6,991.74/9,648.63 = 3,848.04/x
  3. Step 3: Cross multiply
    6,991.74x = 9,648.63 × 3,848.04
  4. Step 4: Simplify right side
    6,991.74x = 37,128,314.19
  5. Step 5: Solve for x
    x = 37,128,314.19/6,991.74
  6. Step 6: Final answer
    x = 5,310.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.