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Finding the Fourth Proportional to 11,768.56, 16,225.86 and 8,619.28

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Solution

The fourth proportional to 11,768.56, 16,225.86 and 8,619.28 is: 11,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,768.56 : 16,225.86 = 8,619.28 : x
  2. Step 2: Convert to fraction form
    11,768.56/16,225.86 = 8,619.28/x
  3. Step 3: Cross multiply
    11,768.56x = 16,225.86 × 8,619.28
  4. Step 4: Simplify right side
    11,768.56x = 139,855,230.58
  5. Step 5: Solve for x
    x = 139,855,230.58/11,768.56
  6. Step 6: Final answer
    x = 11,883.80

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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.