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Finding the Third Proportional to 1,148.25 and 2,487.47

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Solution

The third proportional to 1,148.25 and 2,487.47 is: 5,388.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.25 : 2,487.47 = 2,487.47 : x
  2. Step 2: Convert to fraction form
    1,148.25/2,487.47 = 2,487.47/x
  3. Step 3: Cross multiply
    1,148.25x = 2,487.47 × 2,487.47
  4. Step 4: Simplify right side
    1,148.25x = 6,187,500.78
  5. Step 5: Solve for x
    x = 6,187,500.78/1,148.25
  6. Step 6: Final answer
    x = 5,388.64

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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.