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Finding the Third Proportional to 438.75 and 956.25

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Solution

The third proportional to 438.75 and 956.25 is: 2,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.75 : 956.25 = 956.25 : x
  2. Step 2: Convert to fraction form
    438.75/956.25 = 956.25/x
  3. Step 3: Cross multiply
    438.75x = 956.25 × 956.25
  4. Step 4: Simplify right side
    438.75x = 914,414.06
  5. Step 5: Solve for x
    x = 914,414.06/438.75
  6. Step 6: Final answer
    x = 2,084.13

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.