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Finding the Fourth Proportional to 8,758.54, 13,138.62 and 3,492.28

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Solution

The fourth proportional to 8,758.54, 13,138.62 and 3,492.28 is: 5,238.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.54 : 13,138.62 = 3,492.28 : x
  2. Step 2: Convert to fraction form
    8,758.54/13,138.62 = 3,492.28/x
  3. Step 3: Cross multiply
    8,758.54x = 13,138.62 × 3,492.28
  4. Step 4: Simplify right side
    8,758.54x = 45,883,739.85
  5. Step 5: Solve for x
    x = 45,883,739.85/8,758.54
  6. Step 6: Final answer
    x = 5,238.74

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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.