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Finding the Fourth Proportional to 19,793.67, 29,669.04 and 9,909.11

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Solution

The fourth proportional to 19,793.67, 29,669.04 and 9,909.11 is: 14,852.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,793.67 : 29,669.04 = 9,909.11 : x
  2. Step 2: Convert to fraction form
    19,793.67/29,669.04 = 9,909.11/x
  3. Step 3: Cross multiply
    19,793.67x = 29,669.04 × 9,909.11
  4. Step 4: Simplify right side
    19,793.67x = 293,993,780.95
  5. Step 5: Solve for x
    x = 293,993,780.95/19,793.67
  6. Step 6: Final answer
    x = 14,852.92

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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.