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Finding the Third Proportional to 668.04 and 982.76

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Solution

The third proportional to 668.04 and 982.76 is: 1,445.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.04 : 982.76 = 982.76 : x
  2. Step 2: Convert to fraction form
    668.04/982.76 = 982.76/x
  3. Step 3: Cross multiply
    668.04x = 982.76 × 982.76
  4. Step 4: Simplify right side
    668.04x = 965,812.92
  5. Step 5: Solve for x
    x = 965,812.92/668.04
  6. Step 6: Final answer
    x = 1,445.74

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.