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Finding the Fourth Proportional to 225,572.98, 311,278.41 and 123,579.70

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Solution

The fourth proportional to 225,572.98, 311,278.41 and 123,579.70 is: 170,533.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,572.98 : 311,278.41 = 123,579.70 : x
  2. Step 2: Convert to fraction form
    225,572.98/311,278.41 = 123,579.70/x
  3. Step 3: Cross multiply
    225,572.98x = 311,278.41 × 123,579.70
  4. Step 4: Simplify right side
    225,572.98x = 38,467,692,524.28
  5. Step 5: Solve for x
    x = 38,467,692,524.28/225,572.98
  6. Step 6: Final answer
    x = 170,533.25

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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.