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Finding the Fourth Proportional to 8,618.06, 11,892.94 and 4,892.06

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Solution

The fourth proportional to 8,618.06, 11,892.94 and 4,892.06 is: 6,751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.06 : 11,892.94 = 4,892.06 : x
  2. Step 2: Convert to fraction form
    8,618.06/11,892.94 = 4,892.06/x
  3. Step 3: Cross multiply
    8,618.06x = 11,892.94 × 4,892.06
  4. Step 4: Simplify right side
    8,618.06x = 58,180,993.56
  5. Step 5: Solve for x
    x = 58,180,993.56/8,618.06
  6. Step 6: Final answer
    x = 6,751.05

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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.