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Finding the Fourth Proportional to 12,355.92, 18,534.78 and 3,472.56

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Solution

The fourth proportional to 12,355.92, 18,534.78 and 3,472.56 is: 5,209.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.92 : 18,534.78 = 3,472.56 : x
  2. Step 2: Convert to fraction form
    12,355.92/18,534.78 = 3,472.56/x
  3. Step 3: Cross multiply
    12,355.92x = 18,534.78 × 3,472.56
  4. Step 4: Simplify right side
    12,355.92x = 64,363,135.64
  5. Step 5: Solve for x
    x = 64,363,135.64/12,355.92
  6. Step 6: Final answer
    x = 5,209.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.