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Finding the Fourth Proportional to 7,241.80, 9,991.36 and 4,054.63

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Solution

The fourth proportional to 7,241.80, 9,991.36 and 4,054.63 is: 5,594.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,241.80 : 9,991.36 = 4,054.63 : x
  2. Step 2: Convert to fraction form
    7,241.80/9,991.36 = 4,054.63/x
  3. Step 3: Cross multiply
    7,241.80x = 9,991.36 × 4,054.63
  4. Step 4: Simplify right side
    7,241.80x = 40,511,268.00
  5. Step 5: Solve for x
    x = 40,511,268.00/7,241.80
  6. Step 6: Final answer
    x = 5,594.09

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1.5x scale

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.