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Finding the Fourth Proportional to 624,561.28, 861,895.08 and 338,080.48

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Solution

The fourth proportional to 624,561.28, 861,895.08 and 338,080.48 is: 466,551.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,561.28 : 861,895.08 = 338,080.48 : x
  2. Step 2: Convert to fraction form
    624,561.28/861,895.08 = 338,080.48/x
  3. Step 3: Cross multiply
    624,561.28x = 861,895.08 × 338,080.48
  4. Step 4: Simplify right side
    624,561.28x = 291,389,902,356.04
  5. Step 5: Solve for x
    x = 291,389,902,356.04/624,561.28
  6. Step 6: Final answer
    x = 466,551.34

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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.