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Finding the Third Proportional to 991.50 and 2,674.50

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Solution

The third proportional to 991.50 and 2,674.50 is: 7,214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    991.50 : 2,674.50 = 2,674.50 : x
  2. Step 2: Convert to fraction form
    991.50/2,674.50 = 2,674.50/x
  3. Step 3: Cross multiply
    991.50x = 2,674.50 × 2,674.50
  4. Step 4: Simplify right side
    991.50x = 7,152,950.25
  5. Step 5: Solve for x
    x = 7,152,950.25/991.50
  6. Step 6: Final answer
    x = 7,214.27

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.