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Finding the Fourth Proportional to 57,391.42, 86,100.98 and 19,946.04

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Solution

The fourth proportional to 57,391.42, 86,100.98 and 19,946.04 is: 29,923.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,391.42 : 86,100.98 = 19,946.04 : x
  2. Step 2: Convert to fraction form
    57,391.42/86,100.98 = 19,946.04/x
  3. Step 3: Cross multiply
    57,391.42x = 86,100.98 × 19,946.04
  4. Step 4: Simplify right side
    57,391.42x = 1,717,373,591.12
  5. Step 5: Solve for x
    x = 1,717,373,591.12/57,391.42
  6. Step 6: Final answer
    x = 29,923.87

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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.