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Finding the Fourth Proportional to 32,520.64, 48,747.48 and 12,791.20

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Solution

The fourth proportional to 32,520.64, 48,747.48 and 12,791.20 is: 19,173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,520.64 : 48,747.48 = 12,791.20 : x
  2. Step 2: Convert to fraction form
    32,520.64/48,747.48 = 12,791.20/x
  3. Step 3: Cross multiply
    32,520.64x = 48,747.48 × 12,791.20
  4. Step 4: Simplify right side
    32,520.64x = 623,538,766.18
  5. Step 5: Solve for x
    x = 623,538,766.18/32,520.64
  6. Step 6: Final answer
    x = 19,173.63

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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.