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Finding the Fourth Proportional to 125,915.90, 173,758.52 and 68,553.98

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Solution

The fourth proportional to 125,915.90, 173,758.52 and 68,553.98 is: 94,601.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,915.90 : 173,758.52 = 68,553.98 : x
  2. Step 2: Convert to fraction form
    125,915.90/173,758.52 = 68,553.98/x
  3. Step 3: Cross multiply
    125,915.90x = 173,758.52 × 68,553.98
  4. Step 4: Simplify right side
    125,915.90x = 11,911,836,893.35
  5. Step 5: Solve for x
    x = 11,911,836,893.35/125,915.90
  6. Step 6: Final answer
    x = 94,601.53

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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.