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Finding the Third Proportional to 751.50 and 975.75

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Solution

The third proportional to 751.50 and 975.75 is: 1,266.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.50 : 975.75 = 975.75 : x
  2. Step 2: Convert to fraction form
    751.50/975.75 = 975.75/x
  3. Step 3: Cross multiply
    751.50x = 975.75 × 975.75
  4. Step 4: Simplify right side
    751.50x = 952,088.06
  5. Step 5: Solve for x
    x = 952,088.06/751.50
  6. Step 6: Final answer
    x = 1,266.92

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.