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Finding the Fourth Proportional to 397,201.72, 547,693.36 and 372,007.48

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Solution

The fourth proportional to 397,201.72, 547,693.36 and 372,007.48 is: 512,953.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,201.72 : 547,693.36 = 372,007.48 : x
  2. Step 2: Convert to fraction form
    397,201.72/547,693.36 = 372,007.48/x
  3. Step 3: Cross multiply
    397,201.72x = 547,693.36 × 372,007.48
  4. Step 4: Simplify right side
    397,201.72x = 203,746,026,666.33
  5. Step 5: Solve for x
    x = 203,746,026,666.33/397,201.72
  6. Step 6: Final answer
    x = 512,953.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.