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Finding the Third Proportional to 352.40 and 760.32

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Solution

The third proportional to 352.40 and 760.32 is: 1,640.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.40 : 760.32 = 760.32 : x
  2. Step 2: Convert to fraction form
    352.40/760.32 = 760.32/x
  3. Step 3: Cross multiply
    352.40x = 760.32 × 760.32
  4. Step 4: Simplify right side
    352.40x = 578,092.92
  5. Step 5: Solve for x
    x = 578,092.92/352.40
  6. Step 6: Final answer
    x = 1,640.46

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.