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Finding the Fourth Proportional to 173,901.80, 260,939.10 and 68,724.20

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Solution

The fourth proportional to 173,901.80, 260,939.10 and 68,724.20 is: 103,120.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,901.80 : 260,939.10 = 68,724.20 : x
  2. Step 2: Convert to fraction form
    173,901.80/260,939.10 = 68,724.20/x
  3. Step 3: Cross multiply
    173,901.80x = 260,939.10 × 68,724.20
  4. Step 4: Simplify right side
    173,901.80x = 17,932,830,896.22
  5. Step 5: Solve for x
    x = 17,932,830,896.22/173,901.80
  6. Step 6: Final answer
    x = 103,120.44

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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.