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Finding the Third Proportional to 1,366.88 and 2,931.19

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Solution

The third proportional to 1,366.88 and 2,931.19 is: 6,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,366.88 : 2,931.19 = 2,931.19 : x
  2. Step 2: Convert to fraction form
    1,366.88/2,931.19 = 2,931.19/x
  3. Step 3: Cross multiply
    1,366.88x = 2,931.19 × 2,931.19
  4. Step 4: Simplify right side
    1,366.88x = 8,591,860.16
  5. Step 5: Solve for x
    x = 8,591,860.16/1,366.88
  6. Step 6: Final answer
    x = 6,285.77

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.