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Finding the Fourth Proportional to 52,686.90, 79,027.92 and 15,245.87

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Solution

The fourth proportional to 52,686.90, 79,027.92 and 15,245.87 is: 22,868.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,686.90 : 79,027.92 = 15,245.87 : x
  2. Step 2: Convert to fraction form
    52,686.90/79,027.92 = 15,245.87/x
  3. Step 3: Cross multiply
    52,686.90x = 79,027.92 × 15,245.87
  4. Step 4: Simplify right side
    52,686.90x = 1,204,848,999.55
  5. Step 5: Solve for x
    x = 1,204,848,999.55/52,686.90
  6. Step 6: Final answer
    x = 22,868.09

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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.