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Finding the Fourth Proportional to 316,947.91, 437,387.24 and 171,757.72

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Solution

The fourth proportional to 316,947.91, 437,387.24 and 171,757.72 is: 237,025.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,947.91 : 437,387.24 = 171,757.72 : x
  2. Step 2: Convert to fraction form
    316,947.91/437,387.24 = 171,757.72/x
  3. Step 3: Cross multiply
    316,947.91x = 437,387.24 × 171,757.72
  4. Step 4: Simplify right side
    316,947.91x = 75,124,632,912.56
  5. Step 5: Solve for x
    x = 75,124,632,912.56/316,947.91
  6. Step 6: Final answer
    x = 237,025.18

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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.