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Finding the Fourth Proportional to 11,367.84, 15,694.62 and 7,338.21

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Solution

The fourth proportional to 11,367.84, 15,694.62 and 7,338.21 is: 10,131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,367.84 : 15,694.62 = 7,338.21 : x
  2. Step 2: Convert to fraction form
    11,367.84/15,694.62 = 7,338.21/x
  3. Step 3: Cross multiply
    11,367.84x = 15,694.62 × 7,338.21
  4. Step 4: Simplify right side
    11,367.84x = 115,170,417.43
  5. Step 5: Solve for x
    x = 115,170,417.43/11,367.84
  6. Step 6: Final answer
    x = 10,131.25

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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.