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Finding the Third Proportional to 4,089.13 and 6,485.50

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Solution

The third proportional to 4,089.13 and 6,485.50 is: 10,286.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.13 : 6,485.50 = 6,485.50 : x
  2. Step 2: Convert to fraction form
    4,089.13/6,485.50 = 6,485.50/x
  3. Step 3: Cross multiply
    4,089.13x = 6,485.50 × 6,485.50
  4. Step 4: Simplify right side
    4,089.13x = 42,061,710.25
  5. Step 5: Solve for x
    x = 42,061,710.25/4,089.13
  6. Step 6: Final answer
    x = 10,286.24

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.