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Finding the Fourth Proportional to 8,474.16, 12,709.68 and 3,542.49

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Solution

The fourth proportional to 8,474.16, 12,709.68 and 3,542.49 is: 5,313.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.16 : 12,709.68 = 3,542.49 : x
  2. Step 2: Convert to fraction form
    8,474.16/12,709.68 = 3,542.49/x
  3. Step 3: Cross multiply
    8,474.16x = 12,709.68 × 3,542.49
  4. Step 4: Simplify right side
    8,474.16x = 45,023,914.30
  5. Step 5: Solve for x
    x = 45,023,914.30/8,474.16
  6. Step 6: Final answer
    x = 5,313.08

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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.