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Finding the Third Proportional to 964 and 2,143

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Solution

The third proportional to 964 and 2,143 is: 4,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    964 : 2,143 = 2,143 : x
  2. Step 2: Convert to fraction form
    964/2,143 = 2,143/x
  3. Step 3: Cross multiply
    964x = 2,143 × 2,143
  4. Step 4: Simplify right side
    964x = 4,592,449
  5. Step 5: Solve for x
    x = 4,592,449/964
  6. Step 6: Final answer
    x = 4,763.95

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.