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Finding the Fourth Proportional to 3,358.76, 4,634.66 and 1,961

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Solution

The fourth proportional to 3,358.76, 4,634.66 and 1,961 is: 2,705.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,358.76 : 4,634.66 = 1,961 : x
  2. Step 2: Convert to fraction form
    3,358.76/4,634.66 = 1,961/x
  3. Step 3: Cross multiply
    3,358.76x = 4,634.66 × 1,961
  4. Step 4: Simplify right side
    3,358.76x = 9,088,568.26
  5. Step 5: Solve for x
    x = 9,088,568.26/3,358.76
  6. Step 6: Final answer
    x = 2,705.93

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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.