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Finding the Fourth Proportional to 174,016.80, 260,679.60 and 103,687.20

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Solution

The fourth proportional to 174,016.80, 260,679.60 and 103,687.20 is: 155,324.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,016.80 : 260,679.60 = 103,687.20 : x
  2. Step 2: Convert to fraction form
    174,016.80/260,679.60 = 103,687.20/x
  3. Step 3: Cross multiply
    174,016.80x = 260,679.60 × 103,687.20
  4. Step 4: Simplify right side
    174,016.80x = 27,029,137,821.12
  5. Step 5: Solve for x
    x = 27,029,137,821.12/174,016.80
  6. Step 6: Final answer
    x = 155,324.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.