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Finding the Fourth Proportional to 53,191.86, 79,789.81 and 19,908.42

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Solution

The fourth proportional to 53,191.86, 79,789.81 and 19,908.42 is: 29,863.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,191.86 : 79,789.81 = 19,908.42 : x
  2. Step 2: Convert to fraction form
    53,191.86/79,789.81 = 19,908.42/x
  3. Step 3: Cross multiply
    53,191.86x = 79,789.81 × 19,908.42
  4. Step 4: Simplify right side
    53,191.86x = 1,588,489,049.20
  5. Step 5: Solve for x
    x = 1,588,489,049.20/53,191.86
  6. Step 6: Final answer
    x = 29,863.39

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1.5x scale

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.