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Finding the Fourth Proportional to 5,445.88, 8,165.72 and 4,981.48

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Solution

The fourth proportional to 5,445.88, 8,165.72 and 4,981.48 is: 7,469.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.88 : 8,165.72 = 4,981.48 : x
  2. Step 2: Convert to fraction form
    5,445.88/8,165.72 = 4,981.48/x
  3. Step 3: Cross multiply
    5,445.88x = 8,165.72 × 4,981.48
  4. Step 4: Simplify right side
    5,445.88x = 40,677,370.87
  5. Step 5: Solve for x
    x = 40,677,370.87/5,445.88
  6. Step 6: Final answer
    x = 7,469.38

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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.