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Finding the Third Proportional to 1,353.38 and 2,980.13

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Solution

The third proportional to 1,353.38 and 2,980.13 is: 6,562.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.38 : 2,980.13 = 2,980.13 : x
  2. Step 2: Convert to fraction form
    1,353.38/2,980.13 = 2,980.13/x
  3. Step 3: Cross multiply
    1,353.38x = 2,980.13 × 2,980.13
  4. Step 4: Simplify right side
    1,353.38x = 8,881,145.02
  5. Step 5: Solve for x
    x = 8,881,145.02/1,353.38
  6. Step 6: Final answer
    x = 6,562.22

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.