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Finding the Fourth Proportional to 173,856.10, 260,796.30 and 68,661.40

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Solution

The fourth proportional to 173,856.10, 260,796.30 and 68,661.40 is: 102,996.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,856.10 : 260,796.30 = 68,661.40 : x
  2. Step 2: Convert to fraction form
    173,856.10/260,796.30 = 68,661.40/x
  3. Step 3: Cross multiply
    173,856.10x = 260,796.30 × 68,661.40
  4. Step 4: Simplify right side
    173,856.10x = 17,906,639,072.82
  5. Step 5: Solve for x
    x = 17,906,639,072.82/173,856.10
  6. Step 6: Final answer
    x = 102,996.90

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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.