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Finding the Fourth Proportional to 10,953.75, 16,430.67 and 2,745.75

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Solution

The fourth proportional to 10,953.75, 16,430.67 and 2,745.75 is: 4,118.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,953.75 : 16,430.67 = 2,745.75 : x
  2. Step 2: Convert to fraction form
    10,953.75/16,430.67 = 2,745.75/x
  3. Step 3: Cross multiply
    10,953.75x = 16,430.67 × 2,745.75
  4. Step 4: Simplify right side
    10,953.75x = 45,114,512.15
  5. Step 5: Solve for x
    x = 45,114,512.15/10,953.75
  6. Step 6: Final answer
    x = 4,118.64

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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.