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Finding the Fourth Proportional to 3,952,586.42, 5,929,470.12 and 1,256,999.57

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Solution

The fourth proportional to 3,952,586.42, 5,929,470.12 and 1,256,999.57 is: 1,885,687.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,952,586.42 : 5,929,470.12 = 1,256,999.57 : x
  2. Step 2: Convert to fraction form
    3,952,586.42/5,929,470.12 = 1,256,999.57/x
  3. Step 3: Cross multiply
    3,952,586.42x = 5,929,470.12 × 1,256,999.57
  4. Step 4: Simplify right side
    3,952,586.42x = 7,453,341,361,520.50
  5. Step 5: Solve for x
    x = 7,453,341,361,520.50/3,952,586.42
  6. Step 6: Final answer
    x = 1,885,687.14

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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.