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Finding the Fourth Proportional to 12,805.44, 19,200.54 and 6,225

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Solution

The fourth proportional to 12,805.44, 19,200.54 and 6,225 is: 9,333.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.44 : 19,200.54 = 6,225 : x
  2. Step 2: Convert to fraction form
    12,805.44/19,200.54 = 6,225/x
  3. Step 3: Cross multiply
    12,805.44x = 19,200.54 × 6,225
  4. Step 4: Simplify right side
    12,805.44x = 119,523,361.50
  5. Step 5: Solve for x
    x = 119,523,361.50/12,805.44
  6. Step 6: Final answer
    x = 9,333.80

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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.