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Finding the Fourth Proportional to 57,359.41, 86,039.11 and 17,919.63

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Solution

The fourth proportional to 57,359.41, 86,039.11 and 17,919.63 is: 26,879.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,359.41 : 86,039.11 = 17,919.63 : x
  2. Step 2: Convert to fraction form
    57,359.41/86,039.11 = 17,919.63/x
  3. Step 3: Cross multiply
    57,359.41x = 86,039.11 × 17,919.63
  4. Step 4: Simplify right side
    57,359.41x = 1,541,789,016.73
  5. Step 5: Solve for x
    x = 1,541,789,016.73/57,359.41
  6. Step 6: Final answer
    x = 26,879.45

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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.