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Finding the Third Proportional to 705 and 1,549.50

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Solution

The third proportional to 705 and 1,549.50 is: 3,405.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    705 : 1,549.50 = 1,549.50 : x
  2. Step 2: Convert to fraction form
    705/1,549.50 = 1,549.50/x
  3. Step 3: Cross multiply
    705x = 1,549.50 × 1,549.50
  4. Step 4: Simplify right side
    705x = 2,400,950.25
  5. Step 5: Solve for x
    x = 2,400,950.25/705
  6. Step 6: Final answer
    x = 3,405.60

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.