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Finding the Fourth Proportional to 117,874.42, 162,680.57 and 66,200.02

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Solution

The fourth proportional to 117,874.42, 162,680.57 and 66,200.02 is: 91,363.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,874.42 : 162,680.57 = 66,200.02 : x
  2. Step 2: Convert to fraction form
    117,874.42/162,680.57 = 66,200.02/x
  3. Step 3: Cross multiply
    117,874.42x = 162,680.57 × 66,200.02
  4. Step 4: Simplify right side
    117,874.42x = 10,769,456,498.16
  5. Step 5: Solve for x
    x = 10,769,456,498.16/117,874.42
  6. Step 6: Final answer
    x = 91,363.81

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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.