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Finding the Fourth Proportional to 172,696.60, 259,103.72 and 105,363.44

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Solution

The fourth proportional to 172,696.60, 259,103.72 and 105,363.44 is: 158,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,696.60 : 259,103.72 = 105,363.44 : x
  2. Step 2: Convert to fraction form
    172,696.60/259,103.72 = 105,363.44/x
  3. Step 3: Cross multiply
    172,696.60x = 259,103.72 × 105,363.44
  4. Step 4: Simplify right side
    172,696.60x = 27,300,059,256.00
  5. Step 5: Solve for x
    x = 27,300,059,256.00/172,696.60
  6. Step 6: Final answer
    x = 158,081.05

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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.