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Finding the Fourth Proportional to 157,696.54, 217,626.38 and 86,080.39

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Solution

The fourth proportional to 157,696.54, 217,626.38 and 86,080.39 is: 118,793.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,696.54 : 217,626.38 = 86,080.39 : x
  2. Step 2: Convert to fraction form
    157,696.54/217,626.38 = 86,080.39/x
  3. Step 3: Cross multiply
    157,696.54x = 217,626.38 × 86,080.39
  4. Step 4: Simplify right side
    157,696.54x = 18,733,363,013.02
  5. Step 5: Solve for x
    x = 18,733,363,013.02/157,696.54
  6. Step 6: Final answer
    x = 118,793.75

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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.