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Finding the Fourth Proportional to 68,906.64, 95,089.38 and 38,691.60

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Solution

The fourth proportional to 68,906.64, 95,089.38 and 38,691.60 is: 53,393.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,906.64 : 95,089.38 = 38,691.60 : x
  2. Step 2: Convert to fraction form
    68,906.64/95,089.38 = 38,691.60/x
  3. Step 3: Cross multiply
    68,906.64x = 95,089.38 × 38,691.60
  4. Step 4: Simplify right side
    68,906.64x = 3,679,160,255.21
  5. Step 5: Solve for x
    x = 3,679,160,255.21/68,906.64
  6. Step 6: Final answer
    x = 53,393.41

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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.