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Finding the Third Proportional to 4,312 and 6,922

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Solution

The third proportional to 4,312 and 6,922 is: 11,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,312 : 6,922 = 6,922 : x
  2. Step 2: Convert to fraction form
    4,312/6,922 = 6,922/x
  3. Step 3: Cross multiply
    4,312x = 6,922 × 6,922
  4. Step 4: Simplify right side
    4,312x = 47,914,084
  5. Step 5: Solve for x
    x = 47,914,084/4,312
  6. Step 6: Final answer
    x = 11,111.80

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.