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Finding the Third Proportional to 992.16 and 2,121

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Solution

The third proportional to 992.16 and 2,121 is: 4,534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    992.16 : 2,121 = 2,121 : x
  2. Step 2: Convert to fraction form
    992.16/2,121 = 2,121/x
  3. Step 3: Cross multiply
    992.16x = 2,121 × 2,121
  4. Step 4: Simplify right side
    992.16x = 4,498,641
  5. Step 5: Solve for x
    x = 4,498,641/992.16
  6. Step 6: Final answer
    x = 4,534.21

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.