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Finding the Fourth Proportional to 108,486.42, 149,716.80 and 60,736.92

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Solution

The fourth proportional to 108,486.42, 149,716.80 and 60,736.92 is: 83,820.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,486.42 : 149,716.80 = 60,736.92 : x
  2. Step 2: Convert to fraction form
    108,486.42/149,716.80 = 60,736.92/x
  3. Step 3: Cross multiply
    108,486.42x = 149,716.80 × 60,736.92
  4. Step 4: Simplify right side
    108,486.42x = 9,093,337,304.26
  5. Step 5: Solve for x
    x = 9,093,337,304.26/108,486.42
  6. Step 6: Final answer
    x = 83,820.05

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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.