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Finding the Fourth Proportional to 237,620.80, 356,143.20 and 137,588.80

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Solution

The fourth proportional to 237,620.80, 356,143.20 and 137,588.80 is: 206,216.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,620.80 : 356,143.20 = 137,588.80 : x
  2. Step 2: Convert to fraction form
    237,620.80/356,143.20 = 137,588.80/x
  3. Step 3: Cross multiply
    237,620.80x = 356,143.20 × 137,588.80
  4. Step 4: Simplify right side
    237,620.80x = 49,001,315,516.16
  5. Step 5: Solve for x
    x = 49,001,315,516.16/237,620.80
  6. Step 6: Final answer
    x = 206,216.44

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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.