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Finding the Fourth Proportional to 12,081.75, 16,673 and 6,776.45

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Solution

The fourth proportional to 12,081.75, 16,673 and 6,776.45 is: 9,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.75 : 16,673 = 6,776.45 : x
  2. Step 2: Convert to fraction form
    12,081.75/16,673 = 6,776.45/x
  3. Step 3: Cross multiply
    12,081.75x = 16,673 × 6,776.45
  4. Step 4: Simplify right side
    12,081.75x = 112,983,750.85
  5. Step 5: Solve for x
    x = 112,983,750.85/12,081.75
  6. Step 6: Final answer
    x = 9,351.60

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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.