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Finding the Fourth Proportional to 108,326.50, 149,489.31 and 60,579.40

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Solution

The fourth proportional to 108,326.50, 149,489.31 and 60,579.40 is: 83,598.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,326.50 : 149,489.31 = 60,579.40 : x
  2. Step 2: Convert to fraction form
    108,326.50/149,489.31 = 60,579.40/x
  3. Step 3: Cross multiply
    108,326.50x = 149,489.31 × 60,579.40
  4. Step 4: Simplify right side
    108,326.50x = 9,055,972,706.21
  5. Step 5: Solve for x
    x = 9,055,972,706.21/108,326.50
  6. Step 6: Final answer
    x = 83,598.87

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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.