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Finding the Fourth Proportional to 7,968.80, 11,953.20 and 3,796.16

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Solution

The fourth proportional to 7,968.80, 11,953.20 and 3,796.16 is: 5,694.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.80 : 11,953.20 = 3,796.16 : x
  2. Step 2: Convert to fraction form
    7,968.80/11,953.20 = 3,796.16/x
  3. Step 3: Cross multiply
    7,968.80x = 11,953.20 × 3,796.16
  4. Step 4: Simplify right side
    7,968.80x = 45,376,199.95
  5. Step 5: Solve for x
    x = 45,376,199.95/7,968.80
  6. Step 6: Final answer
    x = 5,694.24

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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.