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Finding the Fourth Proportional to 11,855.56, 16,360.68 and 6,550.38

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Solution

The fourth proportional to 11,855.56, 16,360.68 and 6,550.38 is: 9,039.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,855.56 : 16,360.68 = 6,550.38 : x
  2. Step 2: Convert to fraction form
    11,855.56/16,360.68 = 6,550.38/x
  3. Step 3: Cross multiply
    11,855.56x = 16,360.68 × 6,550.38
  4. Step 4: Simplify right side
    11,855.56x = 107,168,671.06
  5. Step 5: Solve for x
    x = 107,168,671.06/11,855.56
  6. Step 6: Final answer
    x = 9,039.53

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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.