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Finding the Fourth Proportional to 11,791.65, 16,268.43 and 7,313.79

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Solution

The fourth proportional to 11,791.65, 16,268.43 and 7,313.79 is: 10,090.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.65 : 16,268.43 = 7,313.79 : x
  2. Step 2: Convert to fraction form
    11,791.65/16,268.43 = 7,313.79/x
  3. Step 3: Cross multiply
    11,791.65x = 16,268.43 × 7,313.79
  4. Step 4: Simplify right side
    11,791.65x = 118,983,880.65
  5. Step 5: Solve for x
    x = 118,983,880.65/11,791.65
  6. Step 6: Final answer
    x = 10,090.52

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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.