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Finding the Third Proportional to 1,165 and 2,459.50

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Solution

The third proportional to 1,165 and 2,459.50 is: 5,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165 : 2,459.50 = 2,459.50 : x
  2. Step 2: Convert to fraction form
    1,165/2,459.50 = 2,459.50/x
  3. Step 3: Cross multiply
    1,165x = 2,459.50 × 2,459.50
  4. Step 4: Simplify right side
    1,165x = 6,049,140.25
  5. Step 5: Solve for x
    x = 6,049,140.25/1,165
  6. Step 6: Final answer
    x = 5,192.40

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.