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Finding the Fourth Proportional to 108,377.46, 149,538.49 and 74,373.54

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Solution

The fourth proportional to 108,377.46, 149,538.49 and 74,373.54 is: 102,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,377.46 : 149,538.49 = 74,373.54 : x
  2. Step 2: Convert to fraction form
    108,377.46/149,538.49 = 74,373.54/x
  3. Step 3: Cross multiply
    108,377.46x = 149,538.49 × 74,373.54
  4. Step 4: Simplify right side
    108,377.46x = 11,121,706,962.01
  5. Step 5: Solve for x
    x = 11,121,706,962.01/108,377.46
  6. Step 6: Final answer
    x = 102,620.11

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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.