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Finding the Fourth Proportional to 57,886.58, 86,828.96 and 18,443.43

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Solution

The fourth proportional to 57,886.58, 86,828.96 and 18,443.43 is: 27,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,886.58 : 86,828.96 = 18,443.43 : x
  2. Step 2: Convert to fraction form
    57,886.58/86,828.96 = 18,443.43/x
  3. Step 3: Cross multiply
    57,886.58x = 86,828.96 × 18,443.43
  4. Step 4: Simplify right side
    57,886.58x = 1,601,423,891.84
  5. Step 5: Solve for x
    x = 1,601,423,891.84/57,886.58
  6. Step 6: Final answer
    x = 27,664.85

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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.