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Finding the Fourth Proportional to 53,186.71, 79,793.88 and 19,909.39

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Solution

The fourth proportional to 53,186.71, 79,793.88 and 19,909.39 is: 29,869.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,186.71 : 79,793.88 = 19,909.39 : x
  2. Step 2: Convert to fraction form
    53,186.71/79,793.88 = 19,909.39/x
  3. Step 3: Cross multiply
    53,186.71x = 79,793.88 × 19,909.39
  4. Step 4: Simplify right side
    53,186.71x = 1,588,647,476.53
  5. Step 5: Solve for x
    x = 1,588,647,476.53/53,186.71
  6. Step 6: Final answer
    x = 29,869.26

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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.