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Finding the Third Proportional to 1,699 and 3,654.50

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Solution

The third proportional to 1,699 and 3,654.50 is: 7,860.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699 : 3,654.50 = 3,654.50 : x
  2. Step 2: Convert to fraction form
    1,699/3,654.50 = 3,654.50/x
  3. Step 3: Cross multiply
    1,699x = 3,654.50 × 3,654.50
  4. Step 4: Simplify right side
    1,699x = 13,355,370.25
  5. Step 5: Solve for x
    x = 13,355,370.25/1,699
  6. Step 6: Final answer
    x = 7,860.72

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.