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Finding the Fourth Proportional to 222,301.75, 306,776.43 and 121,699.75

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Solution

The fourth proportional to 222,301.75, 306,776.43 and 121,699.75 is: 167,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,301.75 : 306,776.43 = 121,699.75 : x
  2. Step 2: Convert to fraction form
    222,301.75/306,776.43 = 121,699.75/x
  3. Step 3: Cross multiply
    222,301.75x = 306,776.43 × 121,699.75
  4. Step 4: Simplify right side
    222,301.75x = 37,334,614,836.89
  5. Step 5: Solve for x
    x = 37,334,614,836.89/222,301.75
  6. Step 6: Final answer
    x = 167,945.66

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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.