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Finding the Fourth Proportional to 619,291.88, 854,691.06 and 347,386.28

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Solution

The fourth proportional to 619,291.88, 854,691.06 and 347,386.28 is: 479,431.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,291.88 : 854,691.06 = 347,386.28 : x
  2. Step 2: Convert to fraction form
    619,291.88/854,691.06 = 347,386.28/x
  3. Step 3: Cross multiply
    619,291.88x = 854,691.06 × 347,386.28
  4. Step 4: Simplify right side
    619,291.88x = 296,907,947,882.66
  5. Step 5: Solve for x
    x = 296,907,947,882.66/619,291.88
  6. Step 6: Final answer
    x = 479,431.36

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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.