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Finding the Fourth Proportional to 674,239.11, 930,478.24 and 387,759.42

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Solution

The fourth proportional to 674,239.11, 930,478.24 and 387,759.42 is: 535,124.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,239.11 : 930,478.24 = 387,759.42 : x
  2. Step 2: Convert to fraction form
    674,239.11/930,478.24 = 387,759.42/x
  3. Step 3: Cross multiply
    674,239.11x = 930,478.24 × 387,759.42
  4. Step 4: Simplify right side
    674,239.11x = 360,801,698,012.63
  5. Step 5: Solve for x
    x = 360,801,698,012.63/674,239.11
  6. Step 6: Final answer
    x = 535,124.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.