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Finding the Fourth Proportional to 57,952.20, 86,906.70 and 40,369.80

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Solution

The fourth proportional to 57,952.20, 86,906.70 and 40,369.80 is: 60,539.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,952.20 : 86,906.70 = 40,369.80 : x
  2. Step 2: Convert to fraction form
    57,952.20/86,906.70 = 40,369.80/x
  3. Step 3: Cross multiply
    57,952.20x = 86,906.70 × 40,369.80
  4. Step 4: Simplify right side
    57,952.20x = 3,508,406,097.66
  5. Step 5: Solve for x
    x = 3,508,406,097.66/57,952.20
  6. Step 6: Final answer
    x = 60,539.65

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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.