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Finding the Fourth Proportional to 126,691.48, 174,806.46 and 75,696.55

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Solution

The fourth proportional to 126,691.48, 174,806.46 and 75,696.55 is: 104,444.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,691.48 : 174,806.46 = 75,696.55 : x
  2. Step 2: Convert to fraction form
    126,691.48/174,806.46 = 75,696.55/x
  3. Step 3: Cross multiply
    126,691.48x = 174,806.46 × 75,696.55
  4. Step 4: Simplify right side
    126,691.48x = 13,232,245,939.71
  5. Step 5: Solve for x
    x = 13,232,245,939.71/126,691.48
  6. Step 6: Final answer
    x = 104,444.64

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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.