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Finding the Fourth Proportional to 624,471.11, 861,791 and 382,706.98

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Solution

The fourth proportional to 624,471.11, 861,791 and 382,706.98 is: 528,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,471.11 : 861,791 = 382,706.98 : x
  2. Step 2: Convert to fraction form
    624,471.11/861,791 = 382,706.98/x
  3. Step 3: Cross multiply
    624,471.11x = 861,791 × 382,706.98
  4. Step 4: Simplify right side
    624,471.11x = 329,813,431,001.18
  5. Step 5: Solve for x
    x = 329,813,431,001.18/624,471.11
  6. Step 6: Final answer
    x = 528,148.42

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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.