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Finding the Fourth Proportional to 19,467.12, 29,205 and 5,616.12

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Solution

The fourth proportional to 19,467.12, 29,205 and 5,616.12 is: 8,425.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,467.12 : 29,205 = 5,616.12 : x
  2. Step 2: Convert to fraction form
    19,467.12/29,205 = 5,616.12/x
  3. Step 3: Cross multiply
    19,467.12x = 29,205 × 5,616.12
  4. Step 4: Simplify right side
    19,467.12x = 164,018,784.60
  5. Step 5: Solve for x
    x = 164,018,784.60/19,467.12
  6. Step 6: Final answer
    x = 8,425.43

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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.