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Finding the Fourth Proportional to 108,480.76, 149,701.84 and 60,078.08

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Solution

The fourth proportional to 108,480.76, 149,701.84 and 60,078.08 is: 82,906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,480.76 : 149,701.84 = 60,078.08 : x
  2. Step 2: Convert to fraction form
    108,480.76/149,701.84 = 60,078.08/x
  3. Step 3: Cross multiply
    108,480.76x = 149,701.84 × 60,078.08
  4. Step 4: Simplify right side
    108,480.76x = 8,993,799,119.67
  5. Step 5: Solve for x
    x = 8,993,799,119.67/108,480.76
  6. Step 6: Final answer
    x = 82,906.86

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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.