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Finding the Fourth Proportional to 478,046.22, 659,690.95 and 263,187.88

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Solution

The fourth proportional to 478,046.22, 659,690.95 and 263,187.88 is: 363,192.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,046.22 : 659,690.95 = 263,187.88 : x
  2. Step 2: Convert to fraction form
    478,046.22/659,690.95 = 263,187.88/x
  3. Step 3: Cross multiply
    478,046.22x = 659,690.95 × 263,187.88
  4. Step 4: Simplify right side
    478,046.22x = 173,622,662,585.69
  5. Step 5: Solve for x
    x = 173,622,662,585.69/478,046.22
  6. Step 6: Final answer
    x = 363,192.21

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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.