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Finding the Fourth Proportional to 863,220, 1,191,229.92 and 481,270.08

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Solution

The fourth proportional to 863,220, 1,191,229.92 and 481,270.08 is: 664,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,220 : 1,191,229.92 = 481,270.08 : x
  2. Step 2: Convert to fraction form
    863,220/1,191,229.92 = 481,270.08/x
  3. Step 3: Cross multiply
    863,220x = 1,191,229.92 × 481,270.08
  4. Step 4: Simplify right side
    863,220x = 573,303,318,896.79
  5. Step 5: Solve for x
    x = 573,303,318,896.79/863,220
  6. Step 6: Final answer
    x = 664,145.08

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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.