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Finding the Fourth Proportional to 68,915.25, 103,400.79 and 46,715.97

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Solution

The fourth proportional to 68,915.25, 103,400.79 and 46,715.97 is: 70,092.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,915.25 : 103,400.79 = 46,715.97 : x
  2. Step 2: Convert to fraction form
    68,915.25/103,400.79 = 46,715.97/x
  3. Step 3: Cross multiply
    68,915.25x = 103,400.79 × 46,715.97
  4. Step 4: Simplify right side
    68,915.25x = 4,830,468,203.62
  5. Step 5: Solve for x
    x = 4,830,468,203.62/68,915.25
  6. Step 6: Final answer
    x = 70,092.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.