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Finding the Third Proportional to 790.88 and 1,661.06

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Solution

The third proportional to 790.88 and 1,661.06 is: 3,488.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    790.88 : 1,661.06 = 1,661.06 : x
  2. Step 2: Convert to fraction form
    790.88/1,661.06 = 1,661.06/x
  3. Step 3: Cross multiply
    790.88x = 1,661.06 × 1,661.06
  4. Step 4: Simplify right side
    790.88x = 2,759,128.63
  5. Step 5: Solve for x
    x = 2,759,128.63/790.88
  6. Step 6: Final answer
    x = 3,488.70

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.