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Finding the Fourth Proportional to 57,469.78, 86,211.58 and 19,002.58

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Solution

The fourth proportional to 57,469.78, 86,211.58 and 19,002.58 is: 28,506.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,469.78 : 86,211.58 = 19,002.58 : x
  2. Step 2: Convert to fraction form
    57,469.78/86,211.58 = 19,002.58/x
  3. Step 3: Cross multiply
    57,469.78x = 86,211.58 × 19,002.58
  4. Step 4: Simplify right side
    57,469.78x = 1,638,242,493.38
  5. Step 5: Solve for x
    x = 1,638,242,493.38/57,469.78
  6. Step 6: Final answer
    x = 28,506.16

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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.