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Finding the Fourth Proportional to 117,755.53, 162,499.15 and 66,772.92

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Solution

The fourth proportional to 117,755.53, 162,499.15 and 66,772.92 is: 92,144.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,755.53 : 162,499.15 = 66,772.92 : x
  2. Step 2: Convert to fraction form
    117,755.53/162,499.15 = 66,772.92/x
  3. Step 3: Cross multiply
    117,755.53x = 162,499.15 × 66,772.92
  4. Step 4: Simplify right side
    117,755.53x = 10,850,542,743.02
  5. Step 5: Solve for x
    x = 10,850,542,743.02/117,755.53
  6. Step 6: Final answer
    x = 92,144.66

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1.5x scale

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.