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Finding the Fourth Proportional to 863,951.70, 1,192,253.86 and 481,978.48

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Solution

The fourth proportional to 863,951.70, 1,192,253.86 and 481,978.48 is: 665,130.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,951.70 : 1,192,253.86 = 481,978.48 : x
  2. Step 2: Convert to fraction form
    863,951.70/1,192,253.86 = 481,978.48/x
  3. Step 3: Cross multiply
    863,951.70x = 1,192,253.86 × 481,978.48
  4. Step 4: Simplify right side
    863,951.70x = 574,640,703,216.93
  5. Step 5: Solve for x
    x = 574,640,703,216.93/863,951.70
  6. Step 6: Final answer
    x = 665,130.59

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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.