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Finding the Fourth Proportional to 355,807.54, 533,921.84 and 131,324.34

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Solution

The fourth proportional to 355,807.54, 533,921.84 and 131,324.34 is: 197,064.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,807.54 : 533,921.84 = 131,324.34 : x
  2. Step 2: Convert to fraction form
    355,807.54/533,921.84 = 131,324.34/x
  3. Step 3: Cross multiply
    355,807.54x = 533,921.84 × 131,324.34
  4. Step 4: Simplify right side
    355,807.54x = 70,116,933,249.59
  5. Step 5: Solve for x
    x = 70,116,933,249.59/355,807.54
  6. Step 6: Final answer
    x = 197,064.21

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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.