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Finding the Fourth Proportional to 535,736, 806,812.10 and 487,906.40

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Solution

The fourth proportional to 535,736, 806,812.10 and 487,906.40 is: 734,781.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,736 : 806,812.10 = 487,906.40 : x
  2. Step 2: Convert to fraction form
    535,736/806,812.10 = 487,906.40/x
  3. Step 3: Cross multiply
    535,736x = 806,812.10 × 487,906.40
  4. Step 4: Simplify right side
    535,736x = 393,648,787,187.44
  5. Step 5: Solve for x
    x = 393,648,787,187.44/535,736
  6. Step 6: Final answer
    x = 734,781.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.