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Finding the Third Proportional to 7,772 and 18,332

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Solution

The third proportional to 7,772 and 18,332 is: 43,240.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772 : 18,332 = 18,332 : x
  2. Step 2: Convert to fraction form
    7,772/18,332 = 18,332/x
  3. Step 3: Cross multiply
    7,772x = 18,332 × 18,332
  4. Step 4: Simplify right side
    7,772x = 336,062,224
  5. Step 5: Solve for x
    x = 336,062,224/7,772
  6. Step 6: Final answer
    x = 43,240.12

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.