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Finding the Fourth Proportional to 2,192.90, 3,288.98 and 805.88

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Solution

The fourth proportional to 2,192.90, 3,288.98 and 805.88 is: 1,208.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.90 : 3,288.98 = 805.88 : x
  2. Step 2: Convert to fraction form
    2,192.90/3,288.98 = 805.88/x
  3. Step 3: Cross multiply
    2,192.90x = 3,288.98 × 805.88
  4. Step 4: Simplify right side
    2,192.90x = 2,650,533.44
  5. Step 5: Solve for x
    x = 2,650,533.44/2,192.90
  6. Step 6: Final answer
    x = 1,208.69

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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.