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Finding the Third Proportional to 2,916 and 4,386

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Solution

The third proportional to 2,916 and 4,386 is: 6,597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916 : 4,386 = 4,386 : x
  2. Step 2: Convert to fraction form
    2,916/4,386 = 4,386/x
  3. Step 3: Cross multiply
    2,916x = 4,386 × 4,386
  4. Step 4: Simplify right side
    2,916x = 19,236,996
  5. Step 5: Solve for x
    x = 19,236,996/2,916
  6. Step 6: Final answer
    x = 6,597.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.