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Finding the Fourth Proportional to 19,408.56, 29,113.08 and 5,557.56

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Solution

The fourth proportional to 19,408.56, 29,113.08 and 5,557.56 is: 8,336.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,408.56 : 29,113.08 = 5,557.56 : x
  2. Step 2: Convert to fraction form
    19,408.56/29,113.08 = 5,557.56/x
  3. Step 3: Cross multiply
    19,408.56x = 29,113.08 × 5,557.56
  4. Step 4: Simplify right side
    19,408.56x = 161,797,688.88
  5. Step 5: Solve for x
    x = 161,797,688.88/19,408.56
  6. Step 6: Final answer
    x = 8,336.41

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1.5x scale

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.