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Finding the Fourth Proportional to 3,451.76, 5,174.68 and 1,695.76

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Solution

The fourth proportional to 3,451.76, 5,174.68 and 1,695.76 is: 2,542.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.76 : 5,174.68 = 1,695.76 : x
  2. Step 2: Convert to fraction form
    3,451.76/5,174.68 = 1,695.76/x
  3. Step 3: Cross multiply
    3,451.76x = 5,174.68 × 1,695.76
  4. Step 4: Simplify right side
    3,451.76x = 8,775,015.36
  5. Step 5: Solve for x
    x = 8,775,015.36/3,451.76
  6. Step 6: Final answer
    x = 2,542.19

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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.