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Finding the Third Proportional to 471.38 and 702.75

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Solution

The third proportional to 471.38 and 702.75 is: 1,047.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.38 : 702.75 = 702.75 : x
  2. Step 2: Convert to fraction form
    471.38/702.75 = 702.75/x
  3. Step 3: Cross multiply
    471.38x = 702.75 × 702.75
  4. Step 4: Simplify right side
    471.38x = 493,857.56
  5. Step 5: Solve for x
    x = 493,857.56/471.38
  6. Step 6: Final answer
    x = 1,047.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.