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Finding the Fourth Proportional to 122,894.35, 169,592.43 and 68,446.15

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Solution

The fourth proportional to 122,894.35, 169,592.43 and 68,446.15 is: 94,454.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,894.35 : 169,592.43 = 68,446.15 : x
  2. Step 2: Convert to fraction form
    122,894.35/169,592.43 = 68,446.15/x
  3. Step 3: Cross multiply
    122,894.35x = 169,592.43 × 68,446.15
  4. Step 4: Simplify right side
    122,894.35x = 11,607,948,735.34
  5. Step 5: Solve for x
    x = 11,607,948,735.34/122,894.35
  6. Step 6: Final answer
    x = 94,454.70

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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.