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Finding the Fourth Proportional to 1,568.16, 2,163.92 and 896.06

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Solution

The fourth proportional to 1,568.16, 2,163.92 and 896.06 is: 1,236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.16 : 2,163.92 = 896.06 : x
  2. Step 2: Convert to fraction form
    1,568.16/2,163.92 = 896.06/x
  3. Step 3: Cross multiply
    1,568.16x = 2,163.92 × 896.06
  4. Step 4: Simplify right side
    1,568.16x = 1,939,003.08
  5. Step 5: Solve for x
    x = 1,939,003.08/1,568.16
  6. Step 6: Final answer
    x = 1,236.48

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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.