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Finding the Fourth Proportional to 14,136.32, 19,443.20 and 11,335.68

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Solution

The fourth proportional to 14,136.32, 19,443.20 and 11,335.68 is: 15,591.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,136.32 : 19,443.20 = 11,335.68 : x
  2. Step 2: Convert to fraction form
    14,136.32/19,443.20 = 11,335.68/x
  3. Step 3: Cross multiply
    14,136.32x = 19,443.20 × 11,335.68
  4. Step 4: Simplify right side
    14,136.32x = 220,401,893.38
  5. Step 5: Solve for x
    x = 220,401,893.38/14,136.32
  6. Step 6: Final answer
    x = 15,591.18

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Why These Related Problems?

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