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Finding the Fourth Proportional to 316,912.85, 437,343.17 and 173,669.82

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Solution

The fourth proportional to 316,912.85, 437,343.17 and 173,669.82 is: 239,666.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,912.85 : 437,343.17 = 173,669.82 : x
  2. Step 2: Convert to fraction form
    316,912.85/437,343.17 = 173,669.82/x
  3. Step 3: Cross multiply
    316,912.85x = 437,343.17 × 173,669.82
  4. Step 4: Simplify right side
    316,912.85x = 75,953,308,743.78
  5. Step 5: Solve for x
    x = 75,953,308,743.78/316,912.85
  6. Step 6: Final answer
    x = 239,666.24

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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.