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Finding the Fourth Proportional to 57,914.40, 86,879.88 and 18,471.96

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Solution

The fourth proportional to 57,914.40, 86,879.88 and 18,471.96 is: 27,710.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,914.40 : 86,879.88 = 18,471.96 : x
  2. Step 2: Convert to fraction form
    57,914.40/86,879.88 = 18,471.96/x
  3. Step 3: Cross multiply
    57,914.40x = 86,879.88 × 18,471.96
  4. Step 4: Simplify right side
    57,914.40x = 1,604,841,668.16
  5. Step 5: Solve for x
    x = 1,604,841,668.16/57,914.40
  6. Step 6: Final answer
    x = 27,710.58

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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.