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Finding the Third Proportional to 913 and 1,959

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Solution

The third proportional to 913 and 1,959 is: 4,203.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    913 : 1,959 = 1,959 : x
  2. Step 2: Convert to fraction form
    913/1,959 = 1,959/x
  3. Step 3: Cross multiply
    913x = 1,959 × 1,959
  4. Step 4: Simplify right side
    913x = 3,837,681
  5. Step 5: Solve for x
    x = 3,837,681/913
  6. Step 6: Final answer
    x = 4,203.37

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.