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Finding the Fourth Proportional to 1,863.11, 2,571.11 and 1,077.17

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Solution

The fourth proportional to 1,863.11, 2,571.11 and 1,077.17 is: 1,486.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.11 : 2,571.11 = 1,077.17 : x
  2. Step 2: Convert to fraction form
    1,863.11/2,571.11 = 1,077.17/x
  3. Step 3: Cross multiply
    1,863.11x = 2,571.11 × 1,077.17
  4. Step 4: Simplify right side
    1,863.11x = 2,769,522.56
  5. Step 5: Solve for x
    x = 2,769,522.56/1,863.11
  6. Step 6: Final answer
    x = 1,486.51

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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.