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Finding the Fourth Proportional to 117,806.75, 162,606.74 and 69,436.79

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Solution

The fourth proportional to 117,806.75, 162,606.74 and 69,436.79 is: 95,842.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,806.75 : 162,606.74 = 69,436.79 : x
  2. Step 2: Convert to fraction form
    117,806.75/162,606.74 = 69,436.79/x
  3. Step 3: Cross multiply
    117,806.75x = 162,606.74 × 69,436.79
  4. Step 4: Simplify right side
    117,806.75x = 11,290,890,057.96
  5. Step 5: Solve for x
    x = 11,290,890,057.96/117,806.75
  6. Step 6: Final answer
    x = 95,842.47

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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.