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Finding the Fourth Proportional to 52,068.80, 71,855.04 and 30,858.56

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Solution

The fourth proportional to 52,068.80, 71,855.04 and 30,858.56 is: 42,584.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,068.80 : 71,855.04 = 30,858.56 : x
  2. Step 2: Convert to fraction form
    52,068.80/71,855.04 = 30,858.56/x
  3. Step 3: Cross multiply
    52,068.80x = 71,855.04 × 30,858.56
  4. Step 4: Simplify right side
    52,068.80x = 2,217,343,063.14
  5. Step 5: Solve for x
    x = 2,217,343,063.14/52,068.80
  6. Step 6: Final answer
    x = 42,584.87

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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.