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Finding the Fourth Proportional to 22,812.63, 34,218.99 and 7,230.21

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Solution

The fourth proportional to 22,812.63, 34,218.99 and 7,230.21 is: 10,845.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,812.63 : 34,218.99 = 7,230.21 : x
  2. Step 2: Convert to fraction form
    22,812.63/34,218.99 = 7,230.21/x
  3. Step 3: Cross multiply
    22,812.63x = 34,218.99 × 7,230.21
  4. Step 4: Simplify right side
    22,812.63x = 247,410,483.69
  5. Step 5: Solve for x
    x = 247,410,483.69/22,812.63
  6. Step 6: Final answer
    x = 10,845.33

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.