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Finding the Fourth Proportional to 220,958.04, 304,920.54 and 120,356.04

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Solution

The fourth proportional to 220,958.04, 304,920.54 and 120,356.04 is: 166,090.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,958.04 : 304,920.54 = 120,356.04 : x
  2. Step 2: Convert to fraction form
    220,958.04/304,920.54 = 120,356.04/x
  3. Step 3: Cross multiply
    220,958.04x = 304,920.54 × 120,356.04
  4. Step 4: Simplify right side
    220,958.04x = 36,699,028,709.06
  5. Step 5: Solve for x
    x = 36,699,028,709.06/220,958.04
  6. Step 6: Final answer
    x = 166,090.49

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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.