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Finding the Fourth Proportional to 19,762.66, 29,611.06 and 13,906.96

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Solution

The fourth proportional to 19,762.66, 29,611.06 and 13,906.96 is: 20,837.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,762.66 : 29,611.06 = 13,906.96 : x
  2. Step 2: Convert to fraction form
    19,762.66/29,611.06 = 13,906.96/x
  3. Step 3: Cross multiply
    19,762.66x = 29,611.06 × 13,906.96
  4. Step 4: Simplify right side
    19,762.66x = 411,799,826.98
  5. Step 5: Solve for x
    x = 411,799,826.98/19,762.66
  6. Step 6: Final answer
    x = 20,837.27

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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.