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Finding the Third Proportional to 1,919.95 and 2,867.91

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Solution

The third proportional to 1,919.95 and 2,867.91 is: 4,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.95 : 2,867.91 = 2,867.91 : x
  2. Step 2: Convert to fraction form
    1,919.95/2,867.91 = 2,867.91/x
  3. Step 3: Cross multiply
    1,919.95x = 2,867.91 × 2,867.91
  4. Step 4: Simplify right side
    1,919.95x = 8,224,886.26
  5. Step 5: Solve for x
    x = 8,224,886.26/1,919.95
  6. Step 6: Final answer
    x = 4,283.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.