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Finding the Fourth Proportional to 125,418.96, 173,087.16 and 71,702.58

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Solution

The fourth proportional to 125,418.96, 173,087.16 and 71,702.58 is: 98,954.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,418.96 : 173,087.16 = 71,702.58 : x
  2. Step 2: Convert to fraction form
    125,418.96/173,087.16 = 71,702.58/x
  3. Step 3: Cross multiply
    125,418.96x = 173,087.16 × 71,702.58
  4. Step 4: Simplify right side
    125,418.96x = 12,410,795,936.87
  5. Step 5: Solve for x
    x = 12,410,795,936.87/125,418.96
  6. Step 6: Final answer
    x = 98,954.70

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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.