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Finding the Third Proportional to 356 and 701.50

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Solution

The third proportional to 356 and 701.50 is: 1,382.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    356 : 701.50 = 701.50 : x
  2. Step 2: Convert to fraction form
    356/701.50 = 701.50/x
  3. Step 3: Cross multiply
    356x = 701.50 × 701.50
  4. Step 4: Simplify right side
    356x = 492,102.25
  5. Step 5: Solve for x
    x = 492,102.25/356
  6. Step 6: Final answer
    x = 1,382.31

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.