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Finding the Fourth Proportional to 52,818.54, 79,228.20 and 13,375.78

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Solution

The fourth proportional to 52,818.54, 79,228.20 and 13,375.78 is: 20,063.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,818.54 : 79,228.20 = 13,375.78 : x
  2. Step 2: Convert to fraction form
    52,818.54/79,228.20 = 13,375.78/x
  3. Step 3: Cross multiply
    52,818.54x = 79,228.20 × 13,375.78
  4. Step 4: Simplify right side
    52,818.54x = 1,059,738,973.00
  5. Step 5: Solve for x
    x = 1,059,738,973.00/52,818.54
  6. Step 6: Final answer
    x = 20,063.77

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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.