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Finding the Fourth Proportional to 117,772.41, 162,472.32 and 69,998.61

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Solution

The fourth proportional to 117,772.41, 162,472.32 and 69,998.61 is: 96,566.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,772.41 : 162,472.32 = 69,998.61 : x
  2. Step 2: Convert to fraction form
    117,772.41/162,472.32 = 69,998.61/x
  3. Step 3: Cross multiply
    117,772.41x = 162,472.32 × 69,998.61
  4. Step 4: Simplify right side
    117,772.41x = 11,372,836,563.48
  5. Step 5: Solve for x
    x = 11,372,836,563.48/117,772.41
  6. Step 6: Final answer
    x = 96,566.22

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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.