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Finding the Fourth Proportional to 624,618.56, 861,973.43 and 338,138.43

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Solution

The fourth proportional to 624,618.56, 861,973.43 and 338,138.43 is: 466,630.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,618.56 : 861,973.43 = 338,138.43 : x
  2. Step 2: Convert to fraction form
    624,618.56/861,973.43 = 338,138.43/x
  3. Step 3: Cross multiply
    624,618.56x = 861,973.43 × 338,138.43
  4. Step 4: Simplify right side
    624,618.56x = 291,466,340,631.22
  5. Step 5: Solve for x
    x = 291,466,340,631.22/624,618.56
  6. Step 6: Final answer
    x = 466,630.94

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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.