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Finding the Fourth Proportional to 63,009.21, 86,965.27 and 36,169.85

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Solution

The fourth proportional to 63,009.21, 86,965.27 and 36,169.85 is: 49,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,009.21 : 86,965.27 = 36,169.85 : x
  2. Step 2: Convert to fraction form
    63,009.21/86,965.27 = 36,169.85/x
  3. Step 3: Cross multiply
    63,009.21x = 86,965.27 × 36,169.85
  4. Step 4: Simplify right side
    63,009.21x = 3,145,520,590.26
  5. Step 5: Solve for x
    x = 3,145,520,590.26/63,009.21
  6. Step 6: Final answer
    x = 49,921.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.