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Finding the Fourth Proportional to 172,424.08, 258,636.27 and 82,445.62

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Solution

The fourth proportional to 172,424.08, 258,636.27 and 82,445.62 is: 123,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,424.08 : 258,636.27 = 82,445.62 : x
  2. Step 2: Convert to fraction form
    172,424.08/258,636.27 = 82,445.62/x
  3. Step 3: Cross multiply
    172,424.08x = 258,636.27 × 82,445.62
  4. Step 4: Simplify right side
    172,424.08x = 21,323,427,869.00
  5. Step 5: Solve for x
    x = 21,323,427,869.00/172,424.08
  6. Step 6: Final answer
    x = 123,668.50

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.