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Finding the Fourth Proportional to 386,640.50, 533,562.80 and 214,584.44

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Solution

The fourth proportional to 386,640.50, 533,562.80 and 214,584.44 is: 296,125.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,640.50 : 533,562.80 = 214,584.44 : x
  2. Step 2: Convert to fraction form
    386,640.50/533,562.80 = 214,584.44/x
  3. Step 3: Cross multiply
    386,640.50x = 533,562.80 × 214,584.44
  4. Step 4: Simplify right side
    386,640.50x = 114,494,274,642.83
  5. Step 5: Solve for x
    x = 114,494,274,642.83/386,640.50
  6. Step 6: Final answer
    x = 296,125.92

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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.