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Finding the Fourth Proportional to 108,242.56, 149,364.96 and 60,489.28

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Solution

The fourth proportional to 108,242.56, 149,364.96 and 60,489.28 is: 83,469.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,242.56 : 149,364.96 = 60,489.28 : x
  2. Step 2: Convert to fraction form
    108,242.56/149,364.96 = 60,489.28/x
  3. Step 3: Cross multiply
    108,242.56x = 149,364.96 × 60,489.28
  4. Step 4: Simplify right side
    108,242.56x = 9,034,978,887.63
  5. Step 5: Solve for x
    x = 9,034,978,887.63/108,242.56
  6. Step 6: Final answer
    x = 83,469.75

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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.