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Finding the Fourth Proportional to 68,785.76, 94,931.91 and 38,573.97

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Solution

The fourth proportional to 68,785.76, 94,931.91 and 38,573.97 is: 53,236.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,785.76 : 94,931.91 = 38,573.97 : x
  2. Step 2: Convert to fraction form
    68,785.76/94,931.91 = 38,573.97/x
  3. Step 3: Cross multiply
    68,785.76x = 94,931.91 × 38,573.97
  4. Step 4: Simplify right side
    68,785.76x = 3,661,900,648.38
  5. Step 5: Solve for x
    x = 3,661,900,648.38/68,785.76
  6. Step 6: Final answer
    x = 53,236.32

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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.