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Finding the Fourth Proportional to 439,765.75, 606,877.90 and 238,561.75

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Solution

The fourth proportional to 439,765.75, 606,877.90 and 238,561.75 is: 329,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,765.75 : 606,877.90 = 238,561.75 : x
  2. Step 2: Convert to fraction form
    439,765.75/606,877.90 = 238,561.75/x
  3. Step 3: Cross multiply
    439,765.75x = 606,877.90 × 238,561.75
  4. Step 4: Simplify right side
    439,765.75x = 144,777,855,364.43
  5. Step 5: Solve for x
    x = 144,777,855,364.43/439,765.75
  6. Step 6: Final answer
    x = 329,215.85

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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.