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Finding the Fourth Proportional to 51,274.05, 70,758.21 and 28,303.89

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Solution

The fourth proportional to 51,274.05, 70,758.21 and 28,303.89 is: 39,059.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,274.05 : 70,758.21 = 28,303.89 : x
  2. Step 2: Convert to fraction form
    51,274.05/70,758.21 = 28,303.89/x
  3. Step 3: Cross multiply
    51,274.05x = 70,758.21 × 28,303.89
  4. Step 4: Simplify right side
    51,274.05x = 2,002,732,592.44
  5. Step 5: Solve for x
    x = 2,002,732,592.44/51,274.05
  6. Step 6: Final answer
    x = 39,059.38

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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.