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Finding the Fourth Proportional to 117,608.49, 162,288.01 and 66,611.04

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Solution

The fourth proportional to 117,608.49, 162,288.01 and 66,611.04 is: 91,916.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,608.49 : 162,288.01 = 66,611.04 : x
  2. Step 2: Convert to fraction form
    117,608.49/162,288.01 = 66,611.04/x
  3. Step 3: Cross multiply
    117,608.49x = 162,288.01 × 66,611.04
  4. Step 4: Simplify right side
    117,608.49x = 10,810,173,138.50
  5. Step 5: Solve for x
    x = 10,810,173,138.50/117,608.49
  6. Step 6: Final answer
    x = 91,916.61

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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.