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Finding the Fourth Proportional to 222,459.31, 307,020.81 and 125,667.25

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Solution

The fourth proportional to 222,459.31, 307,020.81 and 125,667.25 is: 173,436.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,459.31 : 307,020.81 = 125,667.25 : x
  2. Step 2: Convert to fraction form
    222,459.31/307,020.81 = 125,667.25/x
  3. Step 3: Cross multiply
    222,459.31x = 307,020.81 × 125,667.25
  4. Step 4: Simplify right side
    222,459.31x = 38,582,460,589.17
  5. Step 5: Solve for x
    x = 38,582,460,589.17/222,459.31
  6. Step 6: Final answer
    x = 173,436.03

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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.