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Finding the Third Proportional to 2,190.80 and 2,575.13

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Solution

The third proportional to 2,190.80 and 2,575.13 is: 3,026.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.80 : 2,575.13 = 2,575.13 : x
  2. Step 2: Convert to fraction form
    2,190.80/2,575.13 = 2,575.13/x
  3. Step 3: Cross multiply
    2,190.80x = 2,575.13 × 2,575.13
  4. Step 4: Simplify right side
    2,190.80x = 6,631,268.77
  5. Step 5: Solve for x
    x = 6,631,268.77/2,190.80
  6. Step 6: Final answer
    x = 3,026.88

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.