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Finding the Fourth Proportional to 7,992.61, 11,029.94 and 4,455.43

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Solution

The fourth proportional to 7,992.61, 11,029.94 and 4,455.43 is: 6,148.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.61 : 11,029.94 = 4,455.43 : x
  2. Step 2: Convert to fraction form
    7,992.61/11,029.94 = 4,455.43/x
  3. Step 3: Cross multiply
    7,992.61x = 11,029.94 × 4,455.43
  4. Step 4: Simplify right side
    7,992.61x = 49,143,103.30
  5. Step 5: Solve for x
    x = 49,143,103.30/7,992.61
  6. Step 6: Final answer
    x = 6,148.57

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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.