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Finding the Fourth Proportional to 161,665.45, 223,098.38 and 93,721.81

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Solution

The fourth proportional to 161,665.45, 223,098.38 and 93,721.81 is: 129,336.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,665.45 : 223,098.38 = 93,721.81 : x
  2. Step 2: Convert to fraction form
    161,665.45/223,098.38 = 93,721.81/x
  3. Step 3: Cross multiply
    161,665.45x = 223,098.38 × 93,721.81
  4. Step 4: Simplify right side
    161,665.45x = 20,909,183,981.67
  5. Step 5: Solve for x
    x = 20,909,183,981.67/161,665.45
  6. Step 6: Final answer
    x = 129,336.13

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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.