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Finding the Fourth Proportional to 68,915.86, 103,308.18 and 22,135.94

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Solution

The fourth proportional to 68,915.86, 103,308.18 and 22,135.94 is: 33,182.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,915.86 : 103,308.18 = 22,135.94 : x
  2. Step 2: Convert to fraction form
    68,915.86/103,308.18 = 22,135.94/x
  3. Step 3: Cross multiply
    68,915.86x = 103,308.18 × 22,135.94
  4. Step 4: Simplify right side
    68,915.86x = 2,286,823,673.99
  5. Step 5: Solve for x
    x = 2,286,823,673.99/68,915.86
  6. Step 6: Final answer
    x = 33,182.84

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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.