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Finding the Fourth Proportional to 19,602.90, 29,404.11 and 4,811.88

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Solution

The fourth proportional to 19,602.90, 29,404.11 and 4,811.88 is: 7,217.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,602.90 : 29,404.11 = 4,811.88 : x
  2. Step 2: Convert to fraction form
    19,602.90/29,404.11 = 4,811.88/x
  3. Step 3: Cross multiply
    19,602.90x = 29,404.11 × 4,811.88
  4. Step 4: Simplify right side
    19,602.90x = 141,489,048.83
  5. Step 5: Solve for x
    x = 141,489,048.83/19,602.90
  6. Step 6: Final answer
    x = 7,217.76

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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.