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Finding the Fourth Proportional to 223,803.46, 308,856.27 and 121,832.70

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Solution

The fourth proportional to 223,803.46, 308,856.27 and 121,832.70 is: 168,133.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,803.46 : 308,856.27 = 121,832.70 : x
  2. Step 2: Convert to fraction form
    223,803.46/308,856.27 = 121,832.70/x
  3. Step 3: Cross multiply
    223,803.46x = 308,856.27 × 121,832.70
  4. Step 4: Simplify right side
    223,803.46x = 37,628,793,286.03
  5. Step 5: Solve for x
    x = 37,628,793,286.03/223,803.46
  6. Step 6: Final answer
    x = 168,133.21

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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.