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Finding the Third Proportional to 622.50 and 968.81

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Solution

The third proportional to 622.50 and 968.81 is: 1,507.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.50 : 968.81 = 968.81 : x
  2. Step 2: Convert to fraction form
    622.50/968.81 = 968.81/x
  3. Step 3: Cross multiply
    622.50x = 968.81 × 968.81
  4. Step 4: Simplify right side
    622.50x = 938,597.66
  5. Step 5: Solve for x
    x = 938,597.66/622.50
  6. Step 6: Final answer
    x = 1,507.79

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.