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Finding the Fourth Proportional to 124,481.72, 171,783.97 and 70,766.75

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Solution

The fourth proportional to 124,481.72, 171,783.97 and 70,766.75 is: 97,657.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,481.72 : 171,783.97 = 70,766.75 : x
  2. Step 2: Convert to fraction form
    124,481.72/171,783.97 = 70,766.75/x
  3. Step 3: Cross multiply
    124,481.72x = 171,783.97 × 70,766.75
  4. Step 4: Simplify right side
    124,481.72x = 12,156,593,511.54
  5. Step 5: Solve for x
    x = 12,156,593,511.54/124,481.72
  6. Step 6: Final answer
    x = 97,657.66

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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.