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Finding the Fourth Proportional to 3,906.34, 5,859.54 and 1,133.20

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Solution

The fourth proportional to 3,906.34, 5,859.54 and 1,133.20 is: 1,699.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.34 : 5,859.54 = 1,133.20 : x
  2. Step 2: Convert to fraction form
    3,906.34/5,859.54 = 1,133.20/x
  3. Step 3: Cross multiply
    3,906.34x = 5,859.54 × 1,133.20
  4. Step 4: Simplify right side
    3,906.34x = 6,640,030.73
  5. Step 5: Solve for x
    x = 6,640,030.73/3,906.34
  6. Step 6: Final answer
    x = 1,699.81

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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.