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Finding the Third Proportional to 7,438.50 and 16,200

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Solution

The third proportional to 7,438.50 and 16,200 is: 35,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.50 : 16,200 = 16,200 : x
  2. Step 2: Convert to fraction form
    7,438.50/16,200 = 16,200/x
  3. Step 3: Cross multiply
    7,438.50x = 16,200 × 16,200
  4. Step 4: Simplify right side
    7,438.50x = 262,440,000
  5. Step 5: Solve for x
    x = 262,440,000/7,438.50
  6. Step 6: Final answer
    x = 35,281.31

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.