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Finding the Fourth Proportional to 58,123.78, 87,174.18 and 15,992.98

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Solution

The fourth proportional to 58,123.78, 87,174.18 and 15,992.98 is: 23,986.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,123.78 : 87,174.18 = 15,992.98 : x
  2. Step 2: Convert to fraction form
    58,123.78/87,174.18 = 15,992.98/x
  3. Step 3: Cross multiply
    58,123.78x = 87,174.18 × 15,992.98
  4. Step 4: Simplify right side
    58,123.78x = 1,394,174,917.26
  5. Step 5: Solve for x
    x = 1,394,174,917.26/58,123.78
  6. Step 6: Final answer
    x = 23,986.31

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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.