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Finding the Fourth Proportional to 481,424.70, 721,942.65 and 165,719.10

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Solution

The fourth proportional to 481,424.70, 721,942.65 and 165,719.10 is: 248,511.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,424.70 : 721,942.65 = 165,719.10 : x
  2. Step 2: Convert to fraction form
    481,424.70/721,942.65 = 165,719.10/x
  3. Step 3: Cross multiply
    481,424.70x = 721,942.65 × 165,719.10
  4. Step 4: Simplify right side
    481,424.70x = 119,639,686,209.62
  5. Step 5: Solve for x
    x = 119,639,686,209.62/481,424.70
  6. Step 6: Final answer
    x = 248,511.73

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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.