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Finding the Fourth Proportional to 68,915.66, 95,097.76 and 38,698.60

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Solution

The fourth proportional to 68,915.66, 95,097.76 and 38,698.60 is: 53,400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,915.66 : 95,097.76 = 38,698.60 : x
  2. Step 2: Convert to fraction form
    68,915.66/95,097.76 = 38,698.60/x
  3. Step 3: Cross multiply
    68,915.66x = 95,097.76 × 38,698.60
  4. Step 4: Simplify right side
    68,915.66x = 3,680,150,175.14
  5. Step 5: Solve for x
    x = 3,680,150,175.14/68,915.66
  6. Step 6: Final answer
    x = 53,400.78

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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.