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Finding the Fourth Proportional to 108,489.92, 149,728.88 and 60,734.04

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Solution

The fourth proportional to 108,489.92, 149,728.88 and 60,734.04 is: 83,820.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,489.92 : 149,728.88 = 60,734.04 : x
  2. Step 2: Convert to fraction form
    108,489.92/149,728.88 = 60,734.04/x
  3. Step 3: Cross multiply
    108,489.92x = 149,728.88 × 60,734.04
  4. Step 4: Simplify right side
    108,489.92x = 9,093,639,483.41
  5. Step 5: Solve for x
    x = 9,093,639,483.41/108,489.92
  6. Step 6: Final answer
    x = 83,820.14

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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.