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Finding the Fourth Proportional to 5,760.68, 7,943.46 and 3,894.44

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Solution

The fourth proportional to 5,760.68, 7,943.46 and 3,894.44 is: 5,370.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,760.68 : 7,943.46 = 3,894.44 : x
  2. Step 2: Convert to fraction form
    5,760.68/7,943.46 = 3,894.44/x
  3. Step 3: Cross multiply
    5,760.68x = 7,943.46 × 3,894.44
  4. Step 4: Simplify right side
    5,760.68x = 30,935,328.36
  5. Step 5: Solve for x
    x = 30,935,328.36/5,760.68
  6. Step 6: Final answer
    x = 5,370.08

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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.