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Finding the Fourth Proportional to 1,906.17, 2,859.26 and 866.00

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Solution

The fourth proportional to 1,906.17, 2,859.26 and 866.00 is: 1,298.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.17 : 2,859.26 = 866.00 : x
  2. Step 2: Convert to fraction form
    1,906.17/2,859.26 = 866.00/x
  3. Step 3: Cross multiply
    1,906.17x = 2,859.26 × 866.00
  4. Step 4: Simplify right side
    1,906.17x = 2,476,100.53
  5. Step 5: Solve for x
    x = 2,476,100.53/1,906.17
  6. Step 6: Final answer
    x = 1,298.99

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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.