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Finding the Third Proportional to 1,176.39 and 1,720.36

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Solution

The third proportional to 1,176.39 and 1,720.36 is: 2,515.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.39 : 1,720.36 = 1,720.36 : x
  2. Step 2: Convert to fraction form
    1,176.39/1,720.36 = 1,720.36/x
  3. Step 3: Cross multiply
    1,176.39x = 1,720.36 × 1,720.36
  4. Step 4: Simplify right side
    1,176.39x = 2,959,636.38
  5. Step 5: Solve for x
    x = 2,959,636.38/1,176.39
  6. Step 6: Final answer
    x = 2,515.86

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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.