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Finding the Fourth Proportional to 19,408.91, 29,113.37 and 15,494.99

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Solution

The fourth proportional to 19,408.91, 29,113.37 and 15,494.99 is: 23,242.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,408.91 : 29,113.37 = 15,494.99 : x
  2. Step 2: Convert to fraction form
    19,408.91/29,113.37 = 15,494.99/x
  3. Step 3: Cross multiply
    19,408.91x = 29,113.37 × 15,494.99
  4. Step 4: Simplify right side
    19,408.91x = 451,111,377.02
  5. Step 5: Solve for x
    x = 451,111,377.02/19,408.91
  6. Step 6: Final answer
    x = 23,242.49

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Similar ratio
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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.