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Finding the Fourth Proportional to 5,682.91, 7,844.84 and 3,820.99

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Solution

The fourth proportional to 5,682.91, 7,844.84 and 3,820.99 is: 5,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,682.91 : 7,844.84 = 3,820.99 : x
  2. Step 2: Convert to fraction form
    5,682.91/7,844.84 = 3,820.99/x
  3. Step 3: Cross multiply
    5,682.91x = 7,844.84 × 3,820.99
  4. Step 4: Simplify right side
    5,682.91x = 29,975,055.19
  5. Step 5: Solve for x
    x = 29,975,055.19/5,682.91
  6. Step 6: Final answer
    x = 5,274.60

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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.