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Finding the Fourth Proportional to 127,846.60, 176,469.78 and 85,414.60

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Solution

The fourth proportional to 127,846.60, 176,469.78 and 85,414.60 is: 117,899.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,846.60 : 176,469.78 = 85,414.60 : x
  2. Step 2: Convert to fraction form
    127,846.60/176,469.78 = 85,414.60/x
  3. Step 3: Cross multiply
    127,846.60x = 176,469.78 × 85,414.60
  4. Step 4: Simplify right side
    127,846.60x = 15,073,095,670.79
  5. Step 5: Solve for x
    x = 15,073,095,670.79/127,846.60
  6. Step 6: Final answer
    x = 117,899.86

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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.