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Finding the Fourth Proportional to 125,821.70, 173,630.76 and 68,458.58

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Solution

The fourth proportional to 125,821.70, 173,630.76 and 68,458.58 is: 94,471.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,821.70 : 173,630.76 = 68,458.58 : x
  2. Step 2: Convert to fraction form
    125,821.70/173,630.76 = 68,458.58/x
  3. Step 3: Cross multiply
    125,821.70x = 173,630.76 × 68,458.58
  4. Step 4: Simplify right side
    125,821.70x = 11,886,515,273.92
  5. Step 5: Solve for x
    x = 11,886,515,273.92/125,821.70
  6. Step 6: Final answer
    x = 94,471.11

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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.