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Finding the Fourth Proportional to 262,906.20, 393,840.90 and 157,411.80

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Solution

The fourth proportional to 262,906.20, 393,840.90 and 157,411.80 is: 235,807.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,906.20 : 393,840.90 = 157,411.80 : x
  2. Step 2: Convert to fraction form
    262,906.20/393,840.90 = 157,411.80/x
  3. Step 3: Cross multiply
    262,906.20x = 393,840.90 × 157,411.80
  4. Step 4: Simplify right side
    262,906.20x = 61,995,204,982.62
  5. Step 5: Solve for x
    x = 61,995,204,982.62/262,906.20
  6. Step 6: Final answer
    x = 235,807.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.