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Finding the Fourth Proportional to 237,233.40, 355,621.50 and 87,391.78

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Solution

The fourth proportional to 237,233.40, 355,621.50 and 87,391.78 is: 131,003.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,233.40 : 355,621.50 = 87,391.78 : x
  2. Step 2: Convert to fraction form
    237,233.40/355,621.50 = 87,391.78/x
  3. Step 3: Cross multiply
    237,233.40x = 355,621.50 × 87,391.78
  4. Step 4: Simplify right side
    237,233.40x = 31,078,395,891.27
  5. Step 5: Solve for x
    x = 31,078,395,891.27/237,233.40
  6. Step 6: Final answer
    x = 131,003.46

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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.