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Finding the Fourth Proportional to 52,782.52, 79,174.30 and 13,339.64

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Solution

The fourth proportional to 52,782.52, 79,174.30 and 13,339.64 is: 20,009.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,782.52 : 79,174.30 = 13,339.64 : x
  2. Step 2: Convert to fraction form
    52,782.52/79,174.30 = 13,339.64/x
  3. Step 3: Cross multiply
    52,782.52x = 79,174.30 × 13,339.64
  4. Step 4: Simplify right side
    52,782.52x = 1,056,156,659.25
  5. Step 5: Solve for x
    x = 1,056,156,659.25/52,782.52
  6. Step 6: Final answer
    x = 20,009.59

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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.