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Finding the Third Proportional to 665.63 and 1,702.13

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Solution

The third proportional to 665.63 and 1,702.13 is: 4,352.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.63 : 1,702.13 = 1,702.13 : x
  2. Step 2: Convert to fraction form
    665.63/1,702.13 = 1,702.13/x
  3. Step 3: Cross multiply
    665.63x = 1,702.13 × 1,702.13
  4. Step 4: Simplify right side
    665.63x = 2,897,229.52
  5. Step 5: Solve for x
    x = 2,897,229.52/665.63
  6. Step 6: Final answer
    x = 4,352.65

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.