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Finding the Fourth Proportional to 439,891, 607,049.58 and 238,687

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Solution

The fourth proportional to 439,891, 607,049.58 and 238,687 is: 329,388.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,891 : 607,049.58 = 238,687 : x
  2. Step 2: Convert to fraction form
    439,891/607,049.58 = 238,687/x
  3. Step 3: Cross multiply
    439,891x = 607,049.58 × 238,687
  4. Step 4: Simplify right side
    439,891x = 144,894,843,101.46
  5. Step 5: Solve for x
    x = 144,894,843,101.46/439,891
  6. Step 6: Final answer
    x = 329,388.06

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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.