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Finding the Fourth Proportional to 68,785.70, 94,894.17 and 48,659.82

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Solution

The fourth proportional to 68,785.70, 94,894.17 and 48,659.82 is: 67,129.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,785.70 : 94,894.17 = 48,659.82 : x
  2. Step 2: Convert to fraction form
    68,785.70/94,894.17 = 48,659.82/x
  3. Step 3: Cross multiply
    68,785.70x = 94,894.17 × 48,659.82
  4. Step 4: Simplify right side
    68,785.70x = 4,617,533,231.25
  5. Step 5: Solve for x
    x = 4,617,533,231.25/68,785.70
  6. Step 6: Final answer
    x = 67,129.27

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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.