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Finding the Fourth Proportional to 1,949.80, 2,922.26 and 976.18

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Solution

The fourth proportional to 1,949.80, 2,922.26 and 976.18 is: 1,463.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.80 : 2,922.26 = 976.18 : x
  2. Step 2: Convert to fraction form
    1,949.80/2,922.26 = 976.18/x
  3. Step 3: Cross multiply
    1,949.80x = 2,922.26 × 976.18
  4. Step 4: Simplify right side
    1,949.80x = 2,852,651.77
  5. Step 5: Solve for x
    x = 2,852,651.77/1,949.80
  6. Step 6: Final answer
    x = 1,463.05

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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.