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Finding the Fourth Proportional to 172,978.92, 238,712.31 and 96,495.48

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Solution

The fourth proportional to 172,978.92, 238,712.31 and 96,495.48 is: 133,164.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,978.92 : 238,712.31 = 96,495.48 : x
  2. Step 2: Convert to fraction form
    172,978.92/238,712.31 = 96,495.48/x
  3. Step 3: Cross multiply
    172,978.92x = 238,712.31 × 96,495.48
  4. Step 4: Simplify right side
    172,978.92x = 23,034,658,935.36
  5. Step 5: Solve for x
    x = 23,034,658,935.36/172,978.92
  6. Step 6: Final answer
    x = 133,164.54

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