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Finding the Fourth Proportional to 117,616.68, 162,299.25 and 66,619.17

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Solution

The fourth proportional to 117,616.68, 162,299.25 and 66,619.17 is: 91,927.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,616.68 : 162,299.25 = 66,619.17 : x
  2. Step 2: Convert to fraction form
    117,616.68/162,299.25 = 66,619.17/x
  3. Step 3: Cross multiply
    117,616.68x = 162,299.25 × 66,619.17
  4. Step 4: Simplify right side
    117,616.68x = 10,812,241,326.62
  5. Step 5: Solve for x
    x = 10,812,241,326.62/117,616.68
  6. Step 6: Final answer
    x = 91,927.79

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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.