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Finding the Fourth Proportional to 439,113.50, 605,642.26 and 377,963.76

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Solution

The fourth proportional to 439,113.50, 605,642.26 and 377,963.76 is: 521,302.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,113.50 : 605,642.26 = 377,963.76 : x
  2. Step 2: Convert to fraction form
    439,113.50/605,642.26 = 377,963.76/x
  3. Step 3: Cross multiply
    439,113.50x = 605,642.26 × 377,963.76
  4. Step 4: Simplify right side
    439,113.50x = 228,910,825,804.50
  5. Step 5: Solve for x
    x = 228,910,825,804.50/439,113.50
  6. Step 6: Final answer
    x = 521,302.18

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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.