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Finding the Fourth Proportional to 57,898.80, 86,792.76 and 18,434.16

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Solution

The fourth proportional to 57,898.80, 86,792.76 and 18,434.16 is: 27,633.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,898.80 : 86,792.76 = 18,434.16 : x
  2. Step 2: Convert to fraction form
    57,898.80/86,792.76 = 18,434.16/x
  3. Step 3: Cross multiply
    57,898.80x = 86,792.76 × 18,434.16
  4. Step 4: Simplify right side
    57,898.80x = 1,599,951,624.68
  5. Step 5: Solve for x
    x = 1,599,951,624.68/57,898.80
  6. Step 6: Final answer
    x = 27,633.59

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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.