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Finding the Fourth Proportional to 20,042.62, 30,055.62 and 7,560.52

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Solution

The fourth proportional to 20,042.62, 30,055.62 and 7,560.52 is: 11,337.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,042.62 : 30,055.62 = 7,560.52 : x
  2. Step 2: Convert to fraction form
    20,042.62/30,055.62 = 7,560.52/x
  3. Step 3: Cross multiply
    20,042.62x = 30,055.62 × 7,560.52
  4. Step 4: Simplify right side
    20,042.62x = 227,236,116.12
  5. Step 5: Solve for x
    x = 227,236,116.12/20,042.62
  6. Step 6: Final answer
    x = 11,337.65

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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.