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Finding the Fourth Proportional to 5,561.68, 7,676.76 and 3,205.48

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Solution

The fourth proportional to 5,561.68, 7,676.76 and 3,205.48 is: 4,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,561.68 : 7,676.76 = 3,205.48 : x
  2. Step 2: Convert to fraction form
    5,561.68/7,676.76 = 3,205.48/x
  3. Step 3: Cross multiply
    5,561.68x = 7,676.76 × 3,205.48
  4. Step 4: Simplify right side
    5,561.68x = 24,607,700.64
  5. Step 5: Solve for x
    x = 24,607,700.64/5,561.68
  6. Step 6: Final answer
    x = 4,424.51

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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.