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Finding the Fourth Proportional to 57,353.86, 79,145.77 and 31,861.95

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Solution

The fourth proportional to 57,353.86, 79,145.77 and 31,861.95 is: 43,968.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,353.86 : 79,145.77 = 31,861.95 : x
  2. Step 2: Convert to fraction form
    57,353.86/79,145.77 = 31,861.95/x
  3. Step 3: Cross multiply
    57,353.86x = 79,145.77 × 31,861.95
  4. Step 4: Simplify right side
    57,353.86x = 2,521,738,566.45
  5. Step 5: Solve for x
    x = 2,521,738,566.45/57,353.86
  6. Step 6: Final answer
    x = 43,968.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.