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Finding the Fourth Proportional to 311,627.03, 467,357.38 and 86,947.97

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Solution

The fourth proportional to 311,627.03, 467,357.38 and 86,947.97 is: 130,398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,627.03 : 467,357.38 = 86,947.97 : x
  2. Step 2: Convert to fraction form
    311,627.03/467,357.38 = 86,947.97/x
  3. Step 3: Cross multiply
    311,627.03x = 467,357.38 × 86,947.97
  4. Step 4: Simplify right side
    311,627.03x = 40,635,772,901.36
  5. Step 5: Solve for x
    x = 40,635,772,901.36/311,627.03
  6. Step 6: Final answer
    x = 130,398.74

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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.