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Finding the Fourth Proportional to 624,616.93, 861,971.17 and 338,136.81

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Solution

The fourth proportional to 624,616.93, 861,971.17 and 338,136.81 is: 466,628.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,616.93 : 861,971.17 = 338,136.81 : x
  2. Step 2: Convert to fraction form
    624,616.93/861,971.17 = 338,136.81/x
  3. Step 3: Cross multiply
    624,616.93x = 861,971.17 × 338,136.81
  4. Step 4: Simplify right side
    624,616.93x = 291,464,181,735.77
  5. Step 5: Solve for x
    x = 291,464,181,735.77/624,616.93
  6. Step 6: Final answer
    x = 466,628.69

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1.5x scale

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.