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Finding the Fourth Proportional to 624,674.25, 861,984.32 and 352,725.66

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Solution

The fourth proportional to 624,674.25, 861,984.32 and 352,725.66 is: 486,724.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,674.25 : 861,984.32 = 352,725.66 : x
  2. Step 2: Convert to fraction form
    624,674.25/861,984.32 = 352,725.66/x
  3. Step 3: Cross multiply
    624,674.25x = 861,984.32 × 352,725.66
  4. Step 4: Simplify right side
    624,674.25x = 304,043,986,418.02
  5. Step 5: Solve for x
    x = 304,043,986,418.02/624,674.25
  6. Step 6: Final answer
    x = 486,724.06

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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.