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Finding the Fourth Proportional to 624,616.56, 861,970.66 and 338,136.43

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Solution

The fourth proportional to 624,616.56, 861,970.66 and 338,136.43 is: 466,628.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,616.56 : 861,970.66 = 338,136.43 : x
  2. Step 2: Convert to fraction form
    624,616.56/861,970.66 = 338,136.43/x
  3. Step 3: Cross multiply
    624,616.56x = 861,970.66 × 338,136.43
  4. Step 4: Simplify right side
    624,616.56x = 291,463,681,737.14
  5. Step 5: Solve for x
    x = 291,463,681,737.14/624,616.56
  6. Step 6: Final answer
    x = 466,628.17

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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.