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Finding the Third Proportional to 7,210.50 and 9,213

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Solution

The third proportional to 7,210.50 and 9,213 is: 11,771.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.50 : 9,213 = 9,213 : x
  2. Step 2: Convert to fraction form
    7,210.50/9,213 = 9,213/x
  3. Step 3: Cross multiply
    7,210.50x = 9,213 × 9,213
  4. Step 4: Simplify right side
    7,210.50x = 84,879,369
  5. Step 5: Solve for x
    x = 84,879,369/7,210.50
  6. Step 6: Final answer
    x = 11,771.63

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.