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Finding the Fourth Proportional to 121,562.46, 167,756.40 and 67,847.47

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Solution

The fourth proportional to 121,562.46, 167,756.40 and 67,847.47 is: 93,629.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,562.46 : 167,756.40 = 67,847.47 : x
  2. Step 2: Convert to fraction form
    121,562.46/167,756.40 = 67,847.47/x
  3. Step 3: Cross multiply
    121,562.46x = 167,756.40 × 67,847.47
  4. Step 4: Simplify right side
    121,562.46x = 11,381,846,896.92
  5. Step 5: Solve for x
    x = 11,381,846,896.92/121,562.46
  6. Step 6: Final answer
    x = 93,629.62

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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.