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Finding the Fourth Proportional to 383,623.40, 575,204.70 and 196,999.40

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Solution

The fourth proportional to 383,623.40, 575,204.70 and 196,999.40 is: 295,380.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,623.40 : 575,204.70 = 196,999.40 : x
  2. Step 2: Convert to fraction form
    383,623.40/575,204.70 = 196,999.40/x
  3. Step 3: Cross multiply
    383,623.40x = 575,204.70 × 196,999.40
  4. Step 4: Simplify right side
    383,623.40x = 113,314,980,777.18
  5. Step 5: Solve for x
    x = 113,314,980,777.18/383,623.40
  6. Step 6: Final answer
    x = 295,380.78

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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.