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Finding the Fourth Proportional to 622,648.30, 858,999.72 and 459,694.66

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Solution

The fourth proportional to 622,648.30, 858,999.72 and 459,694.66 is: 634,190.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,648.30 : 858,999.72 = 459,694.66 : x
  2. Step 2: Convert to fraction form
    622,648.30/858,999.72 = 459,694.66/x
  3. Step 3: Cross multiply
    622,648.30x = 858,999.72 × 459,694.66
  4. Step 4: Simplify right side
    622,648.30x = 394,877,584,225.50
  5. Step 5: Solve for x
    x = 394,877,584,225.50/622,648.30
  6. Step 6: Final answer
    x = 634,190.42

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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.