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Finding the Third Proportional to 705 and 1,127

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Solution

The third proportional to 705 and 1,127 is: 1,801.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    705 : 1,127 = 1,127 : x
  2. Step 2: Convert to fraction form
    705/1,127 = 1,127/x
  3. Step 3: Cross multiply
    705x = 1,127 × 1,127
  4. Step 4: Simplify right side
    705x = 1,270,129
  5. Step 5: Solve for x
    x = 1,270,129/705
  6. Step 6: Final answer
    x = 1,801.60

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.