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Finding the Third Proportional to 1,390.92 and 3,024.84

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Solution

The third proportional to 1,390.92 and 3,024.84 is: 6,578.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390.92 : 3,024.84 = 3,024.84 : x
  2. Step 2: Convert to fraction form
    1,390.92/3,024.84 = 3,024.84/x
  3. Step 3: Cross multiply
    1,390.92x = 3,024.84 × 3,024.84
  4. Step 4: Simplify right side
    1,390.92x = 9,149,679.71
  5. Step 5: Solve for x
    x = 9,149,679.71/1,390.92
  6. Step 6: Final answer
    x = 6,578.14

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.