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Finding the Fourth Proportional to 57,398.87, 86,099.93 and 15,845.87

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Solution

The fourth proportional to 57,398.87, 86,099.93 and 15,845.87 is: 23,769.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,398.87 : 86,099.93 = 15,845.87 : x
  2. Step 2: Convert to fraction form
    57,398.87/86,099.93 = 15,845.87/x
  3. Step 3: Cross multiply
    57,398.87x = 86,099.93 × 15,845.87
  4. Step 4: Simplify right side
    57,398.87x = 1,364,328,297.79
  5. Step 5: Solve for x
    x = 1,364,328,297.79/57,398.87
  6. Step 6: Final answer
    x = 23,769.25

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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.