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Finding the Fourth Proportional to 222,983.55, 307,717.49 and 121,009.01

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Solution

The fourth proportional to 222,983.55, 307,717.49 and 121,009.01 is: 166,992.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,983.55 : 307,717.49 = 121,009.01 : x
  2. Step 2: Convert to fraction form
    222,983.55/307,717.49 = 121,009.01/x
  3. Step 3: Cross multiply
    222,983.55x = 307,717.49 × 121,009.01
  4. Step 4: Simplify right side
    222,983.55x = 37,236,586,680.95
  5. Step 5: Solve for x
    x = 37,236,586,680.95/222,983.55
  6. Step 6: Final answer
    x = 166,992.53

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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.