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Finding the Third Proportional to 780 and 954

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Solution

The third proportional to 780 and 954 is: 1,166.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    780 : 954 = 954 : x
  2. Step 2: Convert to fraction form
    780/954 = 954/x
  3. Step 3: Cross multiply
    780x = 954 × 954
  4. Step 4: Simplify right side
    780x = 910,116
  5. Step 5: Solve for x
    x = 910,116/780
  6. Step 6: Final answer
    x = 1,166.82

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These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.