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Finding the Fourth Proportional to 439,164.44, 605,712.48 and 378,014.66

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Solution

The fourth proportional to 439,164.44, 605,712.48 and 378,014.66 is: 521,372.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,164.44 : 605,712.48 = 378,014.66 : x
  2. Step 2: Convert to fraction form
    439,164.44/605,712.48 = 378,014.66/x
  3. Step 3: Cross multiply
    439,164.44x = 605,712.48 × 378,014.66
  4. Step 4: Simplify right side
    439,164.44x = 228,968,197,184.96
  5. Step 5: Solve for x
    x = 228,968,197,184.96/439,164.44
  6. Step 6: Final answer
    x = 521,372.35

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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.