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Finding the Third Proportional to 28,406.25 and 43,200

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Solution

The third proportional to 28,406.25 and 43,200 is: 65,698.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,406.25 : 43,200 = 43,200 : x
  2. Step 2: Convert to fraction form
    28,406.25/43,200 = 43,200/x
  3. Step 3: Cross multiply
    28,406.25x = 43,200 × 43,200
  4. Step 4: Simplify right side
    28,406.25x = 1,866,240,000
  5. Step 5: Solve for x
    x = 1,866,240,000/28,406.25
  6. Step 6: Final answer
    x = 65,698.22

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.