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Finding the Fourth Proportional to 57,770.87, 86,639.90 and 18,326.96

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Solution

The fourth proportional to 57,770.87, 86,639.90 and 18,326.96 is: 27,485.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,770.87 : 86,639.90 = 18,326.96 : x
  2. Step 2: Convert to fraction form
    57,770.87/86,639.90 = 18,326.96/x
  3. Step 3: Cross multiply
    57,770.87x = 86,639.90 × 18,326.96
  4. Step 4: Simplify right side
    57,770.87x = 1,587,845,936.40
  5. Step 5: Solve for x
    x = 1,587,845,936.40/57,770.87
  6. Step 6: Final answer
    x = 27,485.23

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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.