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Finding the Fourth Proportional to 203,061.28, 304,365.36 and 84,693.28

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Solution

The fourth proportional to 203,061.28, 304,365.36 and 84,693.28 is: 126,945.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,061.28 : 304,365.36 = 84,693.28 : x
  2. Step 2: Convert to fraction form
    203,061.28/304,365.36 = 84,693.28/x
  3. Step 3: Cross multiply
    203,061.28x = 304,365.36 × 84,693.28
  4. Step 4: Simplify right side
    203,061.28x = 25,777,700,656.78
  5. Step 5: Solve for x
    x = 25,777,700,656.78/203,061.28
  6. Step 6: Final answer
    x = 126,945.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.