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Finding the Fourth Proportional to 108,598.52, 149,865.76 and 66,157.05

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Solution

The fourth proportional to 108,598.52, 149,865.76 and 66,157.05 is: 91,296.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,598.52 : 149,865.76 = 66,157.05 : x
  2. Step 2: Convert to fraction form
    108,598.52/149,865.76 = 66,157.05/x
  3. Step 3: Cross multiply
    108,598.52x = 149,865.76 × 66,157.05
  4. Step 4: Simplify right side
    108,598.52x = 9,914,677,222.30
  5. Step 5: Solve for x
    x = 9,914,677,222.30/108,598.52
  6. Step 6: Final answer
    x = 91,296.61

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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.