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Finding the Third Proportional to 1,561 and 3,635.50

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Solution

The third proportional to 1,561 and 3,635.50 is: 8,466.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561 : 3,635.50 = 3,635.50 : x
  2. Step 2: Convert to fraction form
    1,561/3,635.50 = 3,635.50/x
  3. Step 3: Cross multiply
    1,561x = 3,635.50 × 3,635.50
  4. Step 4: Simplify right side
    1,561x = 13,216,860.25
  5. Step 5: Solve for x
    x = 13,216,860.25/1,561
  6. Step 6: Final answer
    x = 8,466.92

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.