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Finding the Fourth Proportional to 172,979.37, 238,711.43 and 93,491.37

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Solution

The fourth proportional to 172,979.37, 238,711.43 and 93,491.37 is: 129,018.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,979.37 : 238,711.43 = 93,491.37 : x
  2. Step 2: Convert to fraction form
    172,979.37/238,711.43 = 93,491.37/x
  3. Step 3: Cross multiply
    172,979.37x = 238,711.43 × 93,491.37
  4. Step 4: Simplify right side
    172,979.37x = 22,317,458,157.90
  5. Step 5: Solve for x
    x = 22,317,458,157.90/172,979.37
  6. Step 6: Final answer
    x = 129,018.03

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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.