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Finding the Fourth Proportional to 57,798.41, 86,700.11 and 19,873.80

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Solution

The fourth proportional to 57,798.41, 86,700.11 and 19,873.80 is: 29,811.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,798.41 : 86,700.11 = 19,873.80 : x
  2. Step 2: Convert to fraction form
    57,798.41/86,700.11 = 19,873.80/x
  3. Step 3: Cross multiply
    57,798.41x = 86,700.11 × 19,873.80
  4. Step 4: Simplify right side
    57,798.41x = 1,723,060,546.75
  5. Step 5: Solve for x
    x = 1,723,060,546.75/57,798.41
  6. Step 6: Final answer
    x = 29,811.56

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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.