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Finding the Fourth Proportional to 193,422.40, 290,140.89 and 53,191.96

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Solution

The fourth proportional to 193,422.40, 290,140.89 and 53,191.96 is: 79,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,422.40 : 290,140.89 = 53,191.96 : x
  2. Step 2: Convert to fraction form
    193,422.40/290,140.89 = 53,191.96/x
  3. Step 3: Cross multiply
    193,422.40x = 290,140.89 × 53,191.96
  4. Step 4: Simplify right side
    193,422.40x = 15,433,162,615.24
  5. Step 5: Solve for x
    x = 15,433,162,615.24/193,422.40
  6. Step 6: Final answer
    x = 79,789.94

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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.