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Finding the Third Proportional to 3,649.13 and 5,328.38

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Solution

The third proportional to 3,649.13 and 5,328.38 is: 7,780.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,649.13 : 5,328.38 = 5,328.38 : x
  2. Step 2: Convert to fraction form
    3,649.13/5,328.38 = 5,328.38/x
  3. Step 3: Cross multiply
    3,649.13x = 5,328.38 × 5,328.38
  4. Step 4: Simplify right side
    3,649.13x = 28,391,580.14
  5. Step 5: Solve for x
    x = 28,391,580.14/3,649.13
  6. Step 6: Final answer
    x = 7,780.38

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.