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Finding the Fourth Proportional to 116,810, 161,226.60 and 66,538.64

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Solution

The fourth proportional to 116,810, 161,226.60 and 66,538.64 is: 91,839.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,810 : 161,226.60 = 66,538.64 : x
  2. Step 2: Convert to fraction form
    116,810/161,226.60 = 66,538.64/x
  3. Step 3: Cross multiply
    116,810x = 161,226.60 × 66,538.64
  4. Step 4: Simplify right side
    116,810x = 10,727,798,695.82
  5. Step 5: Solve for x
    x = 10,727,798,695.82/116,810
  6. Step 6: Final answer
    x = 91,839.73

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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.