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Finding the Fourth Proportional to 269,942.40, 405,086.40 and 157,622.40

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Solution

The fourth proportional to 269,942.40, 405,086.40 and 157,622.40 is: 236,534.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,942.40 : 405,086.40 = 157,622.40 : x
  2. Step 2: Convert to fraction form
    269,942.40/405,086.40 = 157,622.40/x
  3. Step 3: Cross multiply
    269,942.40x = 405,086.40 × 157,622.40
  4. Step 4: Simplify right side
    269,942.40x = 63,850,690,575.36
  5. Step 5: Solve for x
    x = 63,850,690,575.36/269,942.40
  6. Step 6: Final answer
    x = 236,534.50

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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.