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Finding the Fourth Proportional to 116,811, 161,227.98 and 66,539.64

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Solution

The fourth proportional to 116,811, 161,227.98 and 66,539.64 is: 91,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,811 : 161,227.98 = 66,539.64 : x
  2. Step 2: Convert to fraction form
    116,811/161,227.98 = 66,539.64/x
  3. Step 3: Cross multiply
    116,811x = 161,227.98 × 66,539.64
  4. Step 4: Simplify right side
    116,811x = 10,728,051,747.13
  5. Step 5: Solve for x
    x = 10,728,051,747.13/116,811
  6. Step 6: Final answer
    x = 91,841.11

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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.