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Finding the Fourth Proportional to 439,768.56, 606,881.78 and 238,564.56

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Solution

The fourth proportional to 439,768.56, 606,881.78 and 238,564.56 is: 329,219.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,768.56 : 606,881.78 = 238,564.56 : x
  2. Step 2: Convert to fraction form
    439,768.56/606,881.78 = 238,564.56/x
  3. Step 3: Cross multiply
    439,768.56x = 606,881.78 × 238,564.56
  4. Step 4: Simplify right side
    439,768.56x = 144,780,484,817.72
  5. Step 5: Solve for x
    x = 144,780,484,817.72/439,768.56
  6. Step 6: Final answer
    x = 329,219.73

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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.