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Finding the Third Proportional to 4,692 and 7,222

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Solution

The third proportional to 4,692 and 7,222 is: 11,116.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,692 : 7,222 = 7,222 : x
  2. Step 2: Convert to fraction form
    4,692/7,222 = 7,222/x
  3. Step 3: Cross multiply
    4,692x = 7,222 × 7,222
  4. Step 4: Simplify right side
    4,692x = 52,157,284
  5. Step 5: Solve for x
    x = 52,157,284/4,692
  6. Step 6: Final answer
    x = 11,116.22

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.