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Finding the Fourth Proportional to 10,999.88, 16,498.06 and 3,206.88

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Solution

The fourth proportional to 10,999.88, 16,498.06 and 3,206.88 is: 4,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.88 : 16,498.06 = 3,206.88 : x
  2. Step 2: Convert to fraction form
    10,999.88/16,498.06 = 3,206.88/x
  3. Step 3: Cross multiply
    10,999.88x = 16,498.06 × 3,206.88
  4. Step 4: Simplify right side
    10,999.88x = 52,907,298.65
  5. Step 5: Solve for x
    x = 52,907,298.65/10,999.88
  6. Step 6: Final answer
    x = 4,809.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.