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Finding the Fourth Proportional to 14,113.74, 19,479.51 and 13,408.86

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Solution

The fourth proportional to 14,113.74, 19,479.51 and 13,408.86 is: 18,506.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,113.74 : 19,479.51 = 13,408.86 : x
  2. Step 2: Convert to fraction form
    14,113.74/19,479.51 = 13,408.86/x
  3. Step 3: Cross multiply
    14,113.74x = 19,479.51 × 13,408.86
  4. Step 4: Simplify right side
    14,113.74x = 261,198,022.46
  5. Step 5: Solve for x
    x = 261,198,022.46/14,113.74
  6. Step 6: Final answer
    x = 18,506.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.