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Finding the Fourth Proportional to 7,992.84, 11,028.84 and 4,455.57

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Solution

The fourth proportional to 7,992.84, 11,028.84 and 4,455.57 is: 6,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.84 : 11,028.84 = 4,455.57 : x
  2. Step 2: Convert to fraction form
    7,992.84/11,028.84 = 4,455.57/x
  3. Step 3: Cross multiply
    7,992.84x = 11,028.84 × 4,455.57
  4. Step 4: Simplify right side
    7,992.84x = 49,139,768.64
  5. Step 5: Solve for x
    x = 49,139,768.64/7,992.84
  6. Step 6: Final answer
    x = 6,147.97

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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.