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Finding the Fourth Proportional to 624,616.79, 861,971.46 and 338,136.88

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Solution

The fourth proportional to 624,616.79, 861,971.46 and 338,136.88 is: 466,629.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,616.79 : 861,971.46 = 338,136.88 : x
  2. Step 2: Convert to fraction form
    624,616.79/861,971.46 = 338,136.88/x
  3. Step 3: Cross multiply
    624,616.79x = 861,971.46 × 338,136.88
  4. Step 4: Simplify right side
    624,616.79x = 291,464,340,133.45
  5. Step 5: Solve for x
    x = 291,464,340,133.45/624,616.79
  6. Step 6: Final answer
    x = 466,629.05

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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.