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Finding the Fourth Proportional to 222,055.28, 306,443.52 and 121,453.28

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Solution

The fourth proportional to 222,055.28, 306,443.52 and 121,453.28 is: 167,609.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,055.28 : 306,443.52 = 121,453.28 : x
  2. Step 2: Convert to fraction form
    222,055.28/306,443.52 = 121,453.28/x
  3. Step 3: Cross multiply
    222,055.28x = 306,443.52 × 121,453.28
  4. Step 4: Simplify right side
    222,055.28x = 37,218,570,638.75
  5. Step 5: Solve for x
    x = 37,218,570,638.75/222,055.28
  6. Step 6: Final answer
    x = 167,609.48

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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.