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Finding the Fourth Proportional to 223,422.39, 308,325.78 and 121,449.33

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Solution

The fourth proportional to 223,422.39, 308,325.78 and 121,449.33 is: 167,601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,422.39 : 308,325.78 = 121,449.33 : x
  2. Step 2: Convert to fraction form
    223,422.39/308,325.78 = 121,449.33/x
  3. Step 3: Cross multiply
    223,422.39x = 308,325.78 × 121,449.33
  4. Step 4: Simplify right side
    223,422.39x = 37,445,959,402.73
  5. Step 5: Solve for x
    x = 37,445,959,402.73/223,422.39
  6. Step 6: Final answer
    x = 167,601.64

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1.5x scale

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.